Okay, so I bought this World Rally which was playing blind. I recapped the chassis and neck board and replaced the flyback and HOT as well. I had noticed that the flyback had a small crack in the old one so I decided to replace it. When changing the flyback I noticed the chassis fuse was blown. I assumed that it got blown because the flyback might have been bad. I also put in a new power supply. Anyways, I turned it on and it blew the fuse instantly. After reading through the forum and some online links, it appears that I need to check a bunch of the following:
1) Check for short on C38.
2) Ohm out HOT (centre and third pin. If near 0 then it's shorted)
3) Check large ceramic resister parallel to VR.
4) Check C55, C56, C57
5) Check R84, R85, R86
6) Check C36, C38
7) Check diodes 19-24
8) Check D18.
I'm new to this stuff so just to make sure I understand this correctly, I need to desolder these capacitors, resistors and diodes to test them properly correct? I should mention that I don't have an in-circuit ESR reader, just a regular multimeter. Could it just be that my voltage regulator got fried prior to when I bought the game? Should I pull and test that first before anything else? Any other suggestions would be appreciated. Thanks.
Robert
1) Check for short on C38.
2) Ohm out HOT (centre and third pin. If near 0 then it's shorted)
3) Check large ceramic resister parallel to VR.
4) Check C55, C56, C57
5) Check R84, R85, R86
6) Check C36, C38
7) Check diodes 19-24
8) Check D18.
I'm new to this stuff so just to make sure I understand this correctly, I need to desolder these capacitors, resistors and diodes to test them properly correct? I should mention that I don't have an in-circuit ESR reader, just a regular multimeter. Could it just be that my voltage regulator got fried prior to when I bought the game? Should I pull and test that first before anything else? Any other suggestions would be appreciated. Thanks.
Robert

