trc458 older washington board

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john52732
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Joined: Saturday 18th Apr 2009, 4:17
First Name: steve
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trc458 older washington board

Post by john52732 » Saturday 18th Apr 2009, 6:41

Radio Make and Model: TRC 458
PCB Number: ?
PLL Number: UPD858
Test gear available: WATT METER AND COUNTER MULTI METER
Symptoms: LOW DEAD KEY IF YOU TURN VR 8 TO GET IT UP HIGHER IT BURNS UP THE POT FIRST I THOUGHT BAD AM REG SO REPLACED WITH 2SA473

What is working: EVERYTHING WITH LOW DEAD KEY ON AM

What has been tried: REPLACING THE AM REG WITH 2SA473

Did it suddenly happen ?: NO
Anything else that may be of help?:?

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