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jr |
I have 3 volts on pin 7 but the hv just bearly gets of the start line of the hv probe. Actually aside from a dark screen the pic was still visible so maybe it's the hv I knocked out.
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Grasping at straws, I would check/replace the 3 electrolytic cans between the ic and the HV transformer... the surge might have injured them... the diode standing up between two of the cans could be suspect as well as the 4 transistors in the area. A very real possibility is that the regulator circuit on the ic has been damaged. I really can't guess.
jr |
Well I'll look into those caps and I have these transistors if they are bad so I'll pull one at a time and check . However if the IC is bad then it's game over because there is no info on the web about this chip. What I actually did was touched the wiper of the line amp and the 45v adjust wiper both did this. Thanks.
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After checking all of the corroded traces on the tuner board which ohmed out ok, I discovered that the center pin of both the 6 and 12 volt rear connectors is NEGATIVE! Duhh! jr |
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