Midmark procedure lights are a staple in medical offices, dermatology practices, and surgical suites. They’re designed to provide bright, reliable illumination, whether mounted on rolling stands for portability or ceiling-mounted for fixed, overhead lighting.

Midmark’s lineup has evolved over time, with two main models commonly seen today:

• Midmark 355 – the older, halogen-bulb style light.
• Midmark 255 – the newer LED-based system.

Both are well-built and long-lasting, but like any piece of equipment, they have their quirks. Below are the most common problems technicians see with Midmark lights — and what you can do about them.

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1. Midmark 355 – Light Won’t Turn On

The most common issue with the older Midmark 355 is simple: the light won’t come on.

What it looks like:

• Power switch is on, but the bulb doesn’t light up.
• Sometimes the bulb works for a while, then fails again within a short timeframe.

Why it happens:

• Most often, the halogen bulb has burned out.
• Repeatedly blowing bulbs may indicate the wrong bulb type was used or an issue with the transformer providing too much voltage.
• In some cases, wiring can get pinched inside the mounting tube if the light wasn’t installed correctly.

Fix:

• Replace the bulb. Always use gloves — oils from bare fingers can cause halogen bulbs to overheat and crack.
• If bulbs are failing quickly, check transformer settings. Lowering the voltage slightly can extend bulb life.
• If the light cuts out only in certain positions, the wiring may be pinched and will need to be re-routed by a technician.

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2. Midmark 255 – LED Board Failure

The Midmark 255 uses an LED board instead of a halogen bulb. LEDs last much longer, which means fewer service calls — but when they fail, it’s usually the entire board.

What it looks like:

• Light stops working entirely.
• No response from the unit even though power is connected.

Why it happens:

• The most common cause is a failed LED board.
• Power surges or electrical fluctuations can shorten the lifespan of the board.

Fix:

• Replacing the LED board is the standard solution.
• Using surge protection can help reduce the risk of failure from sudden electrical spikes.

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3. Overheating or Cracked Bulbs in the 355

Occasionally, users report that a bulb cracks almost immediately after installation.

Why it happens:

• This usually occurs when the bulb was installed without gloves. Oils from skin transfer onto the glass, and once the bulb heats up, the spot overheats and causes the glass to crack.

Fix:

• Always use gloves or a lint-free cloth when handling halogen bulbs.
• Ensure the light is powered off during replacement — halogens heat up almost instantly and can cause burns.

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4. Wiring Issues During Installation

While not as common, wiring problems can create intermittent power failures.

What it looks like:

• Light works only in certain positions.
• Power cuts off when the arm is moved.

Why it happens:

• If the wiring inside the tubing wasn’t routed properly during installation, it can get pinched or strained. Over time, this leads to power interruptions.

Fix:

• A technician will need to remove and re-feed the wiring correctly through the arm assembly. Once corrected, the problem typically does not return.

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5. Lights That Sway or Won’t Hold Position

Another issue that occasionally shows up is the light swaying or drifting out of place when you try to position it. This is especially frustrating during a procedure, when steady illumination is critical.

What it looks like:

• The light won’t stay in place after being positioned.
• It drifts slowly, or feels “loose” at the pivot point.

Why it happens:

• This usually means the counterweight system isn’t balanced correctly. Over time, or after adjustments, the counterweight can shift out of alignment, making it impossible for the light to hold its position.

Fix:

• In some cases, you can re-level the light by adjusting the counterweight position.
• If the counterweight itself is worn or damaged, it may need replacement to restore proper balance.

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The Bigger Picture

Midmark procedure lights are generally very reliable. The 355 halogen model has the most common issues simply because bulbs wear out faster than LEDs. The 255 LED model requires far fewer service calls, though replacing the board is more involved than swapping a bulb.

Other occasional issues — from wiring to counterweights — typically stem from installation or long-term wear. The good news? All are repairable, and once fixed, Midmark lights continue to provide years of dependable service.

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Preventive Tips for Midmark Lights

• Use gloves when handling halogen bulbs to avoid cracking from skin oils.
• Install surge protection to safeguard against power surges that can damage LEDs.
• Have lights professionally installed to prevent pinched wiring.
• Check counterweight balance if lights start swaying or drifting.
• Keep spare bulbs on hand for the Midmark 355.
• Schedule routine maintenance to check voltage settings, wiring, and light output.

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Final Thoughts

Midmark procedure lights are simple, durable, and effective. For most users, problems are rare and easily solved — usually a bulb swap for the 355, an LED board replacement for the 255, or a quick adjustment to balance the counterweight.

By following basic preventive care and addressing issues early, you can maximize uptime and extend the life of your lights. And when the fix requires more than a bulb or board swap, Amtech Medical’s service team is here to help with expert troubleshooting, repairs, and replacement parts.

The Candela Vbeam Perfecta is one of the most trusted pulsed dye lasers in dermatology. Designed primarily for vascular treatments such as veins, rosacea, and scars, it also has off-label uses for warts and other skin conditions.

What makes the Vbeam unique is its 595 nm wavelength. Sitting in the yellow-orange range of visible light, this wavelength is absorbed especially well by blue vessels, making it highly effective for vascular work. Unlike solid-state lasers, the Vbeam is a dye-based laser — and that brings its own quirks, especially around routine maintenance and long-term reliability.

Here are the most common problems (and error codes) we see with the Vbeam Perfecta, what they mean in real-world use, and how to address them.

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1. Fault 15 – Transmission Error

If you’ve ever seen your Vbeam throw a “Fault 15” message mid-calibration, you know how frustrating it is. Treatments grind to a halt, staff get flustered, and patients are left waiting.

What’s happening here is a loss of transmission between the laser head and the fiber. In plain terms, the light leaving the machine isn’t matching what’s reaching the handpiece. Once the system detects more than ~25–30% loss, it throws the error and shuts things down.

What it looks like in practice:

• The unit won’t complete calibration.
• Output feels weak or inconsistent.
• Staff notice “dead spots” when firing at the skin.

Why it happens:
There are three main culprits:

1. A damaged fiber line.
2. Lenses in the handpiece slider that have worn down or gotten dirty.
3. A debris shield that’s overdue for cleaning or replacement.

Fix and best practices:
Daily cleaning of the debris shield with alcohol is the easiest way to prevent this fault. If the error persists, try swapping sliders. For example, if you were using the 7 mm slider and Fault 15 appears, switch to the 5 mm or 10 mm slider. If the error clears, the issue is with the slider lens, which can be repaired or replaced. If it persists across sliders, the fiber itself may be compromised — that’s when you’ll need a technician.

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2. Fault 6 – Calibration Fault

Calibration is one of the built-in safety nets of the Vbeam, and it’s where many problems get caught. Every time you adjust the energy, the unit runs a self-check to make sure it can deliver what you’re asking for. But if the system can’t hit those numbers, it throws a Fault 6 calibration error.

What users notice:

• The error usually appears during calibration rather than mid-treatment.
• The system fails to meet the requested output energy.
• No amount of slider swapping or debris shield cleaning fixes it.

What’s going on inside:
Unlike Fault 15, which is usually a transmission issue, Fault 6 points to an internal generation problem. That means the laser head itself isn’t producing enough energy. It could be a dye cartridge nearing end-of-life, worn mirrors, or inefficiencies inside the optics and reflectors.

Solution:
This is not a user-fixable issue. If Fault 6 appears repeatedly, it’s time to call for service. A technician will need to evaluate whether it’s the dye, optics, or another component inside the head.

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3. Fault 12 – Energy Out of Range / Energy Imbalance

If you’ve ever had the machine throw an “Energy Out of Range” or imbalance error, you were probably dealing with the early signs of dye depletion.

How it shows up in the clinic:

• Energy output starts to feel inconsistent, even when settings haven’t changed.
• Treatments may seem weaker than normal.
• The machine eventually displays Fault 12 or a related imbalance warning.

Why it happens:
The Vbeam generates a series of sub-pulses that need to fire in sequence at balanced energy levels. If the dye is breaking down, those pulses lose their balance. The system recognizes this and flags the error before performance degrades further.

Fix:
This one almost always means it’s time for a dye kit replacement. It’s not something a user can handle on their own, but once the kit is replaced and the system recalibrated, output consistency returns.

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The Bigger Picture

The Vbeam Perfecta is one of the most reliable and widely used dermatology lasers in the world, but it comes with one unavoidable fact: the dye has a limited lifespan.

On average, dye kits last around 40,000–50,000 pulses, with a guarantee of ~20,000 shots or one year (whichever comes first). A busy clinic can burn through a kit in months, while a slower-paced practice may find their kit expiring on the calendar rather than the shot count. Either way, replacement is a built-in cost of ownership.

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Preventive Tips for Vbeam Users

• Clean the debris shield daily to reduce the chance of transmission errors.
• Replace debris shields proactively before they cause interruptions.
• Rotate handpiece sliders if you suspect one lens is failing.
• Track shot counts to anticipate dye replacement before performance drops.
• Schedule annual preventive maintenance for calibration, optics, and dye checks.

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Final Thoughts

The Candela Vbeam Perfecta has earned its place as one of the most versatile lasers in dermatology. Its unique 595 nm wavelength makes it unmatched for vascular treatments, and its proven results have kept it in high demand across the country.

Still, it’s important to recognize that this is a dye laser, and dye replacement is part of the ownership equation. Add in common error codes like Fault 6, 12, and 15, and you see why preventive care matters so much.

The takeaway: treat your Vbeam well, stay ahead of routine maintenance, and you’ll enjoy years of reliable performance. And when a problem goes beyond cleaning a shield or swapping a slider, that’s when Amtech Medical’s technicians step in to keep your laser running at its best.

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Amtech Service

Do you need support with your equipment? Amtech Medical is here to help.

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Silverfox chairs are a common sight in dermatology offices, medspas, and aesthetic clinics. They’re versatile, comfortable for patients, and priced well compared to other brands. But like any high-use equipment, they have weak spots that show up again and again in the field.

We sat down with our technician, Daniel Silva, to talk through the issues he sees most often. Below are the most common Silverfox chair problems, how to spot them, and what you can do about it.

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1. Actuators That Stop Working

If you press the remote and nothing happens — no sound, no movement — chances are an actuator has failed.

What it looks like:

• Backrest won’t recline or return upright
• Footrest won’t move
• Chair height doesn’t adjust

Daniel explained: “Most of the time, it’s the actuator itself, not the main board. You hit the button and nothing happens. No clicking, no grinding — just dead.”

👉 Fix: This is not user-serviceable. A technician will test whether the actuator or control board is at fault, but usually it’s the actuator that needs replacing.

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2. Armrests That Break or Dangle

One of the weakest points on Silverfox chairs is the armrest connection. Patients often lean heavily on them when getting up, but they’re not designed to carry full body weight.

What it looks like:

• Armrest suddenly feels loose or drops
• Nut and bolt that act as a “stop” strip out
• Armrest dangles and won’t stay in position

Daniel noted: “There’s a bolt that takes all the pressure. If someone pushes too hard, it strips, digs into the metal, and the armrest just hangs.”

👉 Fix: If the damage is light, a technician may be able to re-thread or replace the bolt. If badly stripped, the armrest assembly usually needs replacing.

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3. Plastic Covers Coming Loose

Silverfox uses lightweight plastic panels around the base and under upholstery, held in place with push pins. Over time, these pins wear out.

What it looks like:

• Plastic panel hanging down under the chair
• Cosmetic gaps in the upholstery trim
• Staff taping covers in place until service arrives

Daniel added: “It doesn’t stop the chair from working, but it looks unprofessional. Most offices just remove the panels until I can replace the pins.”

👉 Fix: If you have replacement push pins, you can reattach panels yourself. Otherwise, a technician can secure or replace the covers quickly.

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4. Footrest Extension Sensor

Many Silverfox chairs have a footrest extension that slides out for taller patients. The problem? If it’s not fully pushed back in, the chair’s safety sensor disables footrest movement.

What it looks like:

• Footrest doesn’t respond to remote
• Other chair functions still work fine
• Extender visibly sticking out

Daniel explained: “If the extender’s out, the sensor blocks the footrest. Push it all the way back in and it works again.”

👉 Fix: Always check the footrest extension before calling for service — this is an easy fix.

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5. Worn-Out Upholstery

Over time, the upholstery on Silverfox chairs begins to show wear — especially in high-traffic practices where the same chair is used dozens of times a day.

What it looks like:

• Cracking or peeling on the seat and backrest
• Fading or discoloration on lighter colors
• Small tears around high-stress seams, often near armrests or edges

In one dermatology office, patients started noticing small cracks in the seat cushion, which eventually split open. The chair still functioned fine mechanically, but cosmetically it gave the wrong impression.

👉 Fix: Upholstery wear is mostly cosmetic, but it affects the professional look of your practice. Silverfox chairs can often be reupholstered or fitted with replacement covers. If wear is extensive, some offices choose to replace the chair entirely.

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The Bigger Picture

Silverfox chairs are affordable and practical, but their design does include some weak points:

• Actuators fail without warning
• Armrests strip easily under weight
• Plastic panels come loose from worn pins
• Footrest sensors lock out movement if extensions aren’t seated properly
• Upholstery cracks and fades with heavy use

These issues don’t mean the chairs are bad — just that practices should be prepared for regular service and occasional part replacements.

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Preventive Tips for Longer Chair Life

• Remind patients not to push down heavily on the armrests.
• Inspect gaskets, bolts, and armrests monthly for early signs of wear.
• Keep replacement push pins on hand for loose covers.
• Train staff to check the footrest extension sensor when functions stop working.
• Clean and condition upholstery regularly to slow cracking and fading.
• Schedule preventive maintenance to catch actuator wear before failure.

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Final Thoughts

Silverfox chairs do their job well, but they’re not indestructible. By knowing the common issues — and spotting the symptoms early — you can minimize downtime and keep your practice running smoothly.

And when problems go beyond quick fixes, that’s when Amtech Medical’s service team is here to help with repairs, upholstery, parts replacement, and ongoing maintenance.

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Amtech Service

Do you need help with your equipment? Amtech Medical is here to help.

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TabTabletop autoclaves are the backbone of sterilization for small medical offices, dermatology practices, dental clinics, and medspas. Compact yet powerful, they ensure instruments are sterilized safely, protecting both patients and providers.

But like any equipment, these autoclaves develop recurring issues — usually from daily wear, skipped maintenance, or environmental factors like poor water quality. The good news is that many of these problems can be diagnosed quickly, and in some cases, fixed without waiting on a service call.

Below we’ll walk through the most common autoclave problems, what causes them, and what to do next. Along the way, we’ll include real-world scenarios to show how these issues play out in the field.

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1. Autoclave Won’t Power On

Imagine this: a dermatology clinic is getting ready for back-to-back procedures, but the autoclave won’t even light up. The front desk is panicking, because without sterilized instruments, the day’s schedule is on the line.

Common Causes:

• Loose power cable or faulty outlet
• Tripped circuit breaker or blown fuse
• Faulty door switch (some autoclaves won’t power unless the door is fully closed)

Fix:

• Confirm the outlet works by testing another device.
• Inspect the fuse or breaker and replace/reset as needed.
• Check that the door is latched tightly — on many tabletop units, an incomplete latch interrupts the power circuit.
• If it still won’t start, the control board or wiring likely needs professional repair.

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2. Chamber Won’t Pressurize

One of the most common calls we get is: “The cycle runs, but the autoclave never builds pressure.” In one case, a medspa reported hearing faint hissing during every cycle — sure enough, the door gasket had cracked, and steam was escaping instead of building pressure.

Causes:

• Worn or cracked door gasket
• Loose or unevenly latched door
• Scale buildup around valves from using tap water instead of distilled
• Leaky fittings or solenoid valves

Fix:

• Replace door gaskets annually, or sooner if cracks or flattening appear.
• Confirm the door closes evenly — sometimes hinges loosen over time.
• Clean valves and fittings.
• Always use distilled water only to prevent scale buildup.

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3. Sterilization Cycle Won’t Complete

A dental practice once reported their autoclave was aborting halfway through every cycle. After inspection, we found the drain filter was clogged with cotton fibers from gauze packs. Airflow was restricted, steam couldn’t circulate, and cycles failed.

Causes:

• Overloaded chamber (steam can’t circulate)
• Drain filter clogged
• Faulty temperature or pressure sensors
• Heating element wearing out

Fix:

• Load instruments loosely, allowing space for steam.
• Clean the drain filter weekly — it’s small but critical.
• If problems persist, sensors or heaters may require replacement.

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4. Wet Packs After a Cycle

Few things frustrate staff more than opening the door to find wet, dripping packs. Not only is it unsafe (moisture can harbor microbes), but it means re-running the cycle — doubling sterilization time.

Causes:

• Chamber overloaded
• Improper wrapping material
• Drain line partially clogged
• Door gasket leaking steam at the wrong time

Fix:

• Reduce load size and leave room between packs.
• Only use wraps designed for autoclaves.
• Inspect drain lines and clean if blocked.
• Replace or lubricate the door gasket if leaking.

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5. Strange Noises or Leaks

Another medspa complained about “knocking” sounds during cycles. After inspection, we found scale buildup inside the steam lines — mineral deposits from using tap water. The fix was a thorough descaling and a reminder to always use distilled water.

Causes:

• Solenoid valve beginning to fail
• Loose or worn chamber gasket
• Mineral buildup in chamber or tubing

Fix:

• Replace worn seals and valves.
• Perform regular descaling treatments (especially in hard-water areas).
• Call for service if noises persist — they can indicate valve timing issues.

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6. Error Codes or “Service Required”

Modern tabletop autoclaves have error codes for safety. These can be intimidating, but often they point directly to the issue.

For example, an error might indicate a temperature sensor failure — meaning the unit isn’t sure how hot it actually is. In one dermatology office, a persistent error code turned out to be nothing more than a faulty door switch, replaced in under 30 minutes.

Common Codes Indicate:

• Sensor failure (temp/pressure)
• Electrical heating fault
• Board communication error
• Door/lid not sealed properly

Fix:

• Try a full power cycle.
• Refer to the user manual for code meaning.
• Some fixes are user-friendly (gaskets, switches), but persistent codes often need a technician.

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Preventive Care to Avoid Most Problems

In almost every scenario above, the problem could have been prevented with basic care.

• Use distilled water only — tap water = scale buildup.
• Clean the drain filter weekly.
• Check gaskets monthly and replace annually.
• Avoid overloading to allow proper steam circulation.
• Schedule yearly preventive maintenance to catch small issues before they shut you down.

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Final Thoughts

Tabletop autoclaves are dependable workhorses, but they’re not invincible. From leaking gaskets to wet packs, most problems follow predictable patterns and can be solved with simple checks.

By knowing what to look for — and addressing issues early — you can keep your autoclave running smoothly, minimize downtime, and protect patient safety.

And when the fix goes beyond basic troubleshooting? That’s where professional technicians step in. Having a trusted service partner means peace of mind that your autoclave is always ready when you need it most.

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Looking for a Replacement?

Sometimes, repairing an older tabletop autoclave just isn’t cost-effective. If the heating element, control board, or chamber itself is failing, the repair costs may approach the price of a new unit.

That’s where Amtech Medical’s refurbished autoclaves come in.

We stock a range of used, professionally reconditioned autoclaves that are:

• Fully serviced and tested by our technicians
• Backed by warranty for peace of mind
• More affordable than new units — without sacrificing reliability
• Available in multiple models and sizes to fit the needs of dermatology, dental, histology, and medspa practices

Choosing a refurbished autoclave from Amtech Medical gives you the confidence of a fully inspected and serviced machine at a fraction of the cost of new. It’s the perfect option for practices that need dependable sterilization without stretching their budget.

👉 Explore our current inventory of used autoclaves on our website or reach out to our team for availability.

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Professional Autoclave Service & Support

While some issues with tabletop autoclaves can be fixed in-house, others require a trained technician. Electrical failures, sensor replacements, valve timing issues, and control board repairs should always be handled by professionals to avoid bigger (and more expensive) problems down the line.

At Amtech Medical, we provide:

• Nationwide Service Coverage – Our technicians travel to support practices across the U.S.
• Preventive Maintenance Programs – Keep your autoclave reliable with scheduled inspections and cleanings.
• Emergency Repairs – Fast turnaround when your sterilizer goes down unexpectedly.
• Multi-Device Support – We service autoclaves alongside your other dermatology, lab, and general medical equipment.

Our goal is simple: minimize downtime and keep your practice running smoothly. With decades of experience across autoclaves, lasers, and diagnostic equipment, our team has the expertise to troubleshoot quickly and get your sterilizer back in operation.

👉 Contact us today to schedule preventive maintenance or request an urgent repair.

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