Tag Archives: pcb troubleshooting

HVAC AC Blower not working, troubleshooting Fan Control board, Fan not working.

Discussing relay and/or control board problems powering the blower motor on electric air handlers and gas furnaces. A quick easy way to trouble shoot most fan control boards to determine if the blower motor is working or if it is the control board. IF YOU FIND THIS VIDEO USEFUL * please* feel free to make […]

IC Tester / PCB Tester: How to find faults and repair PCBs

FULL VIDEO HERE: https://www.youtube.com/watch?v=VOM8CfRUkIY With ABI’s SYSTEM 8 Range of IC and PCB testers, you will be able to fault find / troubleshoot and repair any type of analogue or digital device or PCB. The tests can be carried out at component level as well as at PCB level. The SYSTEM 8 /BoardMaster Range includes […]

Repair of old AVR (Automatic Voltage Regulator) PCB.

A look at an old AVR (Automatic Voltage Regulator) PCB that I was asked if I could fix. these devices are used in generators to regulate the output voltage, which they do by varying the DC excitation of the rotating (rotor) central core of a generator. A generator works by spinning a polarised magnetic field […]

Pinpoint Alpha & Sigma – Affordable PCB Troubleshooting

Built on proven technology and powered by the renowned TestVue software, the PinPoint family of powerful diagnostic test systems allow you to prove your circuits are working or diagnose the exact cause of a failure when they don’t. source

How to repair washing machine Remco pcb relay failure D-lab Electronics

Repair tip to keep your Washing machine control board working. Easy technique utilizing NTE relay sub. The format of this repair demo is also handy for working on other type boards. D-lab electronics is offering more teaching / how to videos on Curious.com. source

How to troubleshoot the transformer

I discuss the low voltage transformer used in HVAC units. Voltage checks are shown to troubleshoot low voltage problems. This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If […]

Easy common fix Toshiba LCD TV, troubleshooting dead TV repair review

Easy common fix Toshiba LCD TV, troubleshooting dead TV no power repair review, r850, q880, q860, Q820 fuseable resistor and voltage regulator common fix for Toshiba TV models 42ZV650, 47ZV650, 46XV, 55ZV, 42RV, 55sv, 52xv, power board number PE0702, PE0709, v28a000962a1. source