...vertical output TA8247,and other ic< did you ever check the jungle ic supply? that is 5volt if the 7805 ic is over voltage replace
...I check Volts on H.transistor on colector pin Volts at that time 50 then I disconnected the pin of 7805 volts appeared on collector on
...bad solder connections on the 5 and 9 volt regulators on the power board. They should be marked 7805, 7809, and possibly 7812. The 78 on these IC's mark that they are positive regulators and the ...
...board attached to it is the signal board. those transistors are regulators they are labled 7809 or 7805 depeding if they are 9 or 5 volt regulators. use a multimeter to determine if one pin has 9v ...
...schematic diagram... as you have said..there had no 5 volts, please check the IC regulator coded:
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