I am attempting to revive a Lost World I picked up. I get general illumination but nothing else. The rectifier was been replaced with a rottendog board at some point previously. Im getting good readings away TP1, TP2, and TP3 but nothing at TP4 and TP5.
According to the repair guide I have been following on http://techniek.flipperwinkel.nl/ballyss/rep/index1.htm#battery TP4 should be supplying the general illumination... but that is working even though it is giving me a zero read.
Do I need to work backwards to the power supply or do more investigating on the rectifier? Any advice is greatly appreciated. Also, sorry for the duplicate image. I could not find how to delete it. Thanks!