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 Post subject: Re: Arvin 65R58 10-transistor, dead... almost
PostPosted: Sep Sun 20, 2020 12:38 am 
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The current should be around 16ma, @ 9VDC (No Signal, Min. Vol.)
The current should be around 25ma, @ 9VDC (Signal, Normal Vol.)

Are you using an analog meter?
If so then do you have a digital multimeter?

The current is way to excessive at over 200ma.
Shorts in transistors or diodes or caps. Or miswired. Solder blob causing short?
Has the radio have previous and evident repairs?

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 Post subject: Re: Arvin 65R58 10-transistor, dead... almost
PostPosted: Sep Sun 20, 2020 12:45 am 
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frenchmarky wrote:
I'll see if I can dig up a 9v wall socket adapter in my box cuz it sure looks like this thing may be eating my batteries up. But the pack has a center tap at the other end for 4.5v so I can't just use an adapter instead, right?
That is correct you cannot use "just" an adapter. You may be able to use an adapter in conjunction with the batteries, but that is a little risky since the batteries are not rechargeable types and may not "like" being charged (no idea how they may behave, or not behave).

The RF Amplifier transistor (X1, TR1) may have a collector to Emitter short, but this would only account for around 15 mA or so of additional current.

Curtis Eickerman

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 Post subject: Re: Arvin 65R58 10-transistor, dead... almost
PostPosted: Sep Sun 20, 2020 2:04 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: moreno valley
This is the second time I let seemingly good but actually bad batteries trick me into going down the wrong path and it ain't gonna happen again. I should have checked the amperage being drawn before and right after the recap too.


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 Post subject: Re: Arvin 65R58 10-transistor, dead... almost
PostPosted: Sep Sun 20, 2020 4:39 am 
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Radiosmoker wrote:
The current should be around 16ma, @ 9VDC (No Signal, Min. Vol.)
The current should be around 25ma, @ 9VDC (Signal, Normal Vol.)

Exactly, and that's a given for most battery Transistor sets.
So with a proven good nine volt supply, what are your voltage readings on the converter Transistor's three elements?

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