How to Get Lambda V404P4K Power Supply Repairs

lambda power supply repairsWon’t power up! Erratic vacuum readback! Load issue/no output under load. No output. Intermittently trips instrumentation. Power Supply DEAD! Bad news, right? “DEAD” in this case is not always dead, of course. As it turns out, all of these Lambda v404P4K power supply repairs HAD failed, but were not “dead” forever. In fact, these Lambda power supply examples were all successfully repaired!

Here’s a quick summary of typical problems that cause these types of bad capacitors in lambda power supplyfailures in Lambda V404P4K 450 watt power supplies:
  • Cracked solder joints
  • Bad capacitors
  • Bad power section
  • Bad power board
  • Overheating damage
  • All of the above simultaneously

These Lambda 450 watt V404P4K power supplies are long lasting workhorses. There are a lot of them out there working hard. Eventually they will break down, mostly from aging components.

If your business relies on these Lambda power supplies you are in good company. If your power supply fails, relax. The good news is that most of these power supplies are repairable!

Did you know that you can often extend the life of your power supply? Preventing your power supply from getting fried in the first place is pretty useful information! If you’d like some tips on that from a previous post click this link!

Are you experiencing a power supply failure right now? Think you might need industrial power supply repairs? Check first to see if your equipment is still under warranty. If so, contact the OEM about repairs. If it is out of warranty, hopefully you have a go-to repair center.

If you need a repair center, contact an independent industrial electronic repair center to find out if they are a good fit for your company and your particular repair needs. They should offer free evaluations for your damaged power supplies and a free quote for repairs (no bench fees!). They should also provide repair reports if requested and a good warranty of at least one year that covers both parts and labor.

About the Author:

ACS Industrial Services is an independent industrial electronic repair center providing power supply repairs for all types and manufacturers, circuit board repairs, repairs for drives, servo motors, CNC equipment, encoders, monitors and touchscreens, PLCs, HMIs, test equipment, light curtains, and much more. RUSH SERVICE is available on request and Two Year Warranties cover most repairs. The very helpful customer service team is available live to answer your questions and help you solve your toughest industrial electronic repair problems. You can reach them by calling 800-605-6419 or going to www.acsindustrial.com.

 

Case Study: Allen Bradley VFD Blown! Can it be Repaired?

REPAIR SOLUTIONS FROM THE PLANT FLOOR – Allen Bradley VFD Blown! Can it be Repaired?  Should it be repaired?

Allen Bradley VFD repairsUnlike in a box of Cracker Jacks, there was an UGLY surprise waiting inside of this drive! When this Allen Bradley VFD failed, the screen gave only a wimpy “bad fuse” alarm. But it was much uglier than that for our Western U.S. power generation customer.

When removing the board assembly over the IGBT modules we discovered that the 3 phase bridge rectifier was badly blown. In simple terms, a bridge rectifier converts AC voltage into DC voltage. In addition, the high voltage bus capacitors were bad, bridge rectifier repairsthree output IGBT modules needed replacing, the film capacitors and MOV’s in the A/C input circuit needed cleaning, and of course, the nearly unidentifiable blown 3 phase bridge rectifier needed replacing.

What went wrong here?

As in most cases, there could be a number of causes for this problem. The most common causes of damage like this to modern VFDs include over voltages, fault currents, inappropriate programming of operation parameters that exceed the machine’s intended capabilities, and, of course, aging components.

VFD repairsThis good quality Allen Bradley VFD was worth repairing. And, at almost 65% less than the cost of new, saved our customer a serious chunk of change. If you are having VFD alarms or failure, we can help!  Most variable frequency drives can, and should, be repaired!

About the Author: ACS Industrial  is an independent industrial electronic repair center providing repair services for drives of all types and most all manufacturers including servo drive repairs, AC/DC drives, VFD drives, servo motors, encoders, printed circuit board repairs, monitors and touchscreens, PLCs, test equipment, light curtains, and much more.  Our customer service team is available to answer your questions and help solve your industrial electronic repair concerns. Legacy equipment can be repaired! RUSH Service is available. You can reach them by calling 800-605-6419

Easy Tips to Decode Your Industrial Electronic Repair Report

Simple electronic repair reportingIs your repair report baffling you? Wondering what in the heck those techs did?  Many purchasers of industrial electronic repairs are very knowledgeable about electronics, but more than a few are not.  And just for the record, we agree, repair reports can sometimes be mysterious and confusing.

Fear not! Knowledge is power and for those folks who don’t have a strong knowledge of electronic repair terms, we created an “electronics repair cheat sheet” of parts and terms frequently seen on repair reports for industrial electronic equipment.  Never be in the dark again!

  • Capacitors (Caps) replaced – A cap (short for capacitor) is a device for storing a charge of electricity; frequently seen in power supplies, drives, and on many circuit boards; this is NOT a DIY repair item for most as caps can cause a painful and possibly lethal electrical shock if touched even if disconnected for weeks. Capacitors are the number one component to go bad (“blown capacitor” is the usual term for this) and often need replacement in failed electronics.
  • Diodes replaced – diodes are semiconductor devices that allow current to flow in only one direction; often used in power supplies and circuit boards (diode array is a grouping of diodes that may or may not be connected and each allows the flow of electricity in one direction and prevents it in the opposite direction). Diodes vary in shape and size, but are always mounted to a “heat sink” to dissipate the heat created by current flowing through them. Causes of diode failure are usually voltage spikes and reversed polarity of the DC connection.
  • EEPROM – stands for “Electrically Erasable Programmable Read-Only Memory”, used in many electronics to store small amounts of data like a mini-hard drive with information for the processor to run the machine.
  • Cathode or CRT replacement– short for Cathode Ray Tube is a big, heavy gas discharge light source that makes its light output from a phosphor coating inside the glass envelope; used inside of older monitors including some touchscreen monitors
  • LCD replaced –“Liquid Crystal Display” monitor screen that shows/displays a video signal. It is usually far cheaper and easier to replace an LCD screen than to attempt repair.
  • Solder/solder traces reflowed – solder is made of metal alloys used to join together metal surfaces to each other. The solder traces are the silvery lines of metal connecting electronic components. These are often “reflowed” during repairs because they can develop micro-fractures – nearly invisible-to-the-naked-eye cracks that can make your electronics fail. Older solder is lead based while newer solder is lead-free.
  • Switches replaced – just like a light switch, these are small devices that turn a circuit on or off in all electronic devices. Switches can usually be replaced when they fail.
  • SCR, MOSFET, IGBT replaced – All of these components are output power devices. IGBT stands for ‘Insulated Gate Bipolar Transistor”; MOSFET – “Metal-Oxide Semiconductor Field-Effect Transistor”; SCR – “Silicon Controlled Rectifier”, These components frequently go bad and need replacement during repairs.
  • ICs replaced – IC stands for “Integrated Circuit” aka chip or microchip. They are a semiconductor wafer with thousands or even millions of tiny resistors, capacitors, and transistors. They can be used as an amplifier, oscillator, timer, counter, computer memory, or microprocessor. These can usually be replaced unless they are custom or contain proprietary programming or code and are password protected.
  • Resistors replaced – a passive component that regulates (resists) the flow of electrical current which controls the current to other component(s) in a circuit for example, resistors keep LEDs from blowing up the second power is applied which means they are a frequent casualty in damaged electronics. Resistors are in virtually every circuit out there.
  • Input/Output tested – the place where the power leaves or enters a piece of equipment or a system; for example, many non-working power supplies come in with a problem description of “no output” or more simply, “doesn’t work”.
  • Conformal Coating/Recoated – a chemical coating of polymer or epoxy applied in a liquid form that dries and “conforms” to the circuit board shape to protect electronic circuits from harsh environments; frequently found on marine electronics. Coatings can often, but not always, be removed using an appropriate solvent and reapplied after repairs are made.
  • Leakage Current – means electrical current that exists where it shouldn’t; frequently happens when insulation is old or damaged, and also in power devices such as MOSFETs, IGBTs and Capacitors.
  • Load (or Line) Regulation – the ability of the unit to maintain a constant voltage or current level on the output channel even if there are changes in the supply’s load; usually a term for power supplies. AVC – Automatic Voltage Compensation is one type of regulation.
  • Troubleshooting unit – just like it sounds, the technician spent time searching for the damage or problems using various visual and test methods.
  • Bench tested – literally the unit is placed on a technician’s workbench and all basic functions are tested, typically both before and after repairs.
  • Load tested/tested under load – tested by putting a demand on the device and measuring or testing its response under expected normal and peak load conditions but not tested in its normal work conditions
  • Statically tested – dry run testing to verify it works but not necessarily tested in normal work conditions or under load
  • Dynamically tested – tested by subjecting the unit to simulated work conditions that could include vibration, shock, bumps, temperature and humidity variations, etc. to make sure the unit works in most expected conditions
  • QC Passed – Quality control has inspected and approved all of the work from repairs to cleaning to reassembly

This list is just a small sample of commonly used electronic repair terms. If you receive a repair report and don’t fully understand it, you should not hesitate to call your repair center for more explanation.  Any customer- oriented repair center should be more than happy to explain their terminology and work completed.

If you are searching for a repair center for your damaged industrial electronics, check first to see if your equipment is still under warranty and if so, contact the OEM about repairs. If it is out of warranty, contact an independent industrial electronic repair center to find out if they are a good fit for your company and your particular repair needs. They should offer free evaluations for your damaged equipment and, if needed, a free quote for repairs (no bench fees!).  They should also provide repair reports if requested and a good warranty of at least one year that covers both parts and labor.

 

About the Author: ACS Industrial Services is an independent industrial electronic repair center providing repair services for printed circuit board repairs of all types and manufacturers, drives, servo motors, CNC equipment, encoders, monitors and touchscreens, PLCs, test equipment, light curtains, and much more. The customer service team is available to answer your questions and help solve your industrial electronic repair concerns. You can reach them by calling 800-605-6419 or going to www.acsindustrial.com .

The Secret to Industrial Touch Screen Repair

 

Touch Screen RepairBroken industrial touch screens such as the one in the picture are a common problem.  What might surprise you is that these units can be repaired and do NOT have to be sent back to the OEM as so many touch screen owners/operators seem to think.

These types of units often have custom or OEM branded touch screens in them.  But get this, 95% of the time these screens can be replaced with identical generic parts at a much lower cost than an OEM repair/replacement part.

Only on rare occasions does a touchscreen repair require an OEM part to get it back into running order.   A typical example of this would be that some touchscreens have proprietary connectors.

The Allen Bradley 2711P-T10C4A8 touch screen repair pictured here is the perfect case study for this situation.  Notice the screen is cracked near the bottom left side.

Our customer, a U.S.-based waste water management systems developer/integrator was worried that this touch screen unit might be unrepairable and, because it was out of warranty and not supported any longer by the OEM, they might have no option but to replace it.

Happily we could put them at ease.  As they do so often, our excellent repair team was able to locate the correct matching parts and get the touch screen repaired and back to the customer in perfect working order.   No time for resting on our laurels though, as it’s off to save the day for other customers!