Category Archives: RetroGameModz

Yamaha RX-V620RDS surround receiver – Repair & troubleshooting exercise

This time we┬┤re looking at a 5.1 surround receiver from Yamaha that has a fault on the center channel.
I was initially planning on making another regular repair video out of this, but towards the end I started to realize that this could actually serve as a very interesting troubleshooting exercise.
Test Continue reading Yamaha RX-V620RDS surround receiver – Repair & troubleshooting exercise

Do eBay sellers care about ESD safety?

When ordering electronic components on eBay from random eBay sellers, how many of those components will be delivered in proper ESD safe packaging?
You would expect retailers of electronic components to be serious enough to know what they are doing, thereby handling and packaging their electronic components properly according to ANSI Continue reading Do eBay sellers care about ESD safety?

Tektronix 2235 oscilloscope repair – Horizontal sweep issue

This is a documented repair of my Tektronix 2235 analog oscilloscope. The scope had an intermittent problem with the horizontal sweep which I had to take a look at since I’m using this analog scope quite often during the repair of other hardware.

I have the schematics for this scope available Continue reading Tektronix 2235 oscilloscope repair – Horizontal sweep issue

PCB UV inspection – Find bad capacitors and other problems on a PCB

This is a very interesting and useful way of spotting bad capacitors and other potential problems on a PCB.
It won’t work on every PCB out there, but it will work on a great number of them. One big advantage with this method is that it is really cheap; all you Continue reading PCB UV inspection – Find bad capacitors and other problems on a PCB

PCB solder pad repair & corrosion clean up – The epoxy method

This is a demonstration of a PCB repair which involves repairing damaged surface mount solder pads as well as cleaning up corrosion from a leaking electrolytic capacitor. The pads had been damaged by the owner of the motherboard as a result of him trying to repair the board on his Continue reading PCB solder pad repair & corrosion clean up – The epoxy method

A1200 Audio Filter ON/OFF Switching – Troubleshooting guide

Like all other Amiga models, the Amiga 1200 has a low-pass filter in hardware which can be found directly on the motherboard. This audio filter can be turned on and off in software. In case of the audio filter being stuck in either the ON or OFF state, how would Continue reading A1200 Audio Filter ON/OFF Switching – Troubleshooting guide