Monday, October 7, 2024

NordicTrack Treadmill Motor Controller model MC2100ELS, Control Board Power Supply dead now repaired.

I received a phone call from a client who wanted his treadmill control board checked by a technician.

I scheduled him the following day since I was busy at the time.

The following day I visited the company where he works, the treadmill was used as the worker's gym facility.

On arrival, I found the board was already taken out of the treadmill and in his office.

I did some initial tests and found IGBT (K50DDTP), an Insulated-gate bipolar transistor dead short.

I tested other components and all looked good according to my meter, Customer pointed out that the main circuit breaker tripped when the treadmill was powered.

 

Sunday, September 1, 2024

Ramtons inductor cooker model RM381 came in dead, now repaired.

 I received the above inductor cooker in my shop for repair, dead on arrival.

I opened It and did some scanning on the power board, coil, and display circuit and all looked in good shape.

Thursday, July 4, 2024

LG 49-inch LED television model 49LH549V has no picture but sound was okay.

 I received a phone call from a client who wanted his television checked by a technician.

The client told me he suspected backlight failure, so I proceeded to the site armed with all equipment for any scenario.

Saturday, May 4, 2024

woofer repair course by Humphrey kimathi

 


I get lots of inquiries from my followers requesting a book on woofer repairs, so this book is yours for the asking.

To be an expert on any equipment repair, the basic thing is to understand how the equipment works.

This is exactly what this book is here to do.

For more details on getting this book on your workbench follow me here




Stay safe


Monday, April 15, 2024

Sony Home theater model HBD-DZ650 changing function automatically now repaired.

 I received the above home theater in my shop for repair, complaint from the customer was changing function automatically.

Since I was busy I requested him to leave his contact so that I can let him know when ready. Later I opened the machine.

Sunday, February 4, 2024

Tuesday, November 14, 2023

Why electronic protector talking long to activate protection mode.

 

The problem of this AC line surge protector was not starting to  give protected AC before 6 minute, something must be wrong  inside the machine since there was no diagram for this circuit  as general services first I re-solder all the joints then the most  problematics part are e -capacitors I had three on the board.

10 microfarad @50 volts

220 microfarad@25 volts

22 microfarad @ 16 volts

The value of 220 microfarad cap was changed to 200 micro and  ESR 148 ohm that was not good two others were not bad  enough by replacing the cap machine start to give voltages  after 2 minute


Article brought to you by Mr.Beh. based in Tehran City-Iran.OP AMP DBL 324