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6TPZ and 5TPO Radio Help
#31

÷1 to Sincere Richard. I use Mouser but either is the way to go. I'm sure the others, like justradios, are in the group. You can be assured of not getting knockoffs
#32

I would check things around before simply replacing the transistor.
Something killef it.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#33

Yes, if the speaker was disconnected or bad connections, it could cause high enough voltage spikes on the collector to kill it especially if the volume was up high!

Ron

Bendix 0626.      RCA 8BX5.   RCA T64
Philco 41-250.    Philco49-500
GE 201.             Philco 39-25
Motorola 61X13. Philco 46-42        Crosley 52TQ
Philco 37-116.    Philco 70
AK 35                Philco 46-350
Philco 620B.       Zenith Transoceanic B-600
Philco 60B.         Majestic 50
Philco 52-944.    AK 84
#34

Indeed. Thank you all. I'll remove and test the rest of the transistors. I'm trying to trace everything at the test points. I'm really not sure why I don't have 10v at 19. There's just the one resistor at K5. I used to have 10v, but now it's 12. The only thing that changed was removing X6. I have no idea what happened to these before I got them. I'm trying to get one running for my cousin. He just got a 1965 Falcon and would like a radio. The guy he got the car from had these two radios, so no telling when they stopped working or why. I really appreciate everyone's help. Thank you.
#35

I'm a little befuddled on this one. Should X5 and X4 be tied together like this?  It looks like someone added this at some point.  I haven't removed them yet, I wanted to see what you thought before I did.  It looks kind of funny to me.


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#36

I suspect it's been repaired before.
And I suspect whoever repaired it, wanted to re-use old transistors' pin stubs in order not to desolder them.
I also suspect that if you look at the other side of the PCB, you might find delaminated/unglued traces.

Inspect the whole thing, and try to stick to the schematic.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#37

Thanks, will do.




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