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Start replacing ceramic caps now!
- Thread starter 357
- Start date
Heres where they reside in the 810e
Here they are in most uniden base's before 1985
Symptoms include transformer is hot as hell after a short amount of time in RECEIVE and or voltage way above 13.8 and turning the pot down does not go blow 15+ volts.
I never had problems with them before either but for sure the base radios this is going on whether you realize it or not.
Here they are in most uniden base's before 1985
Symptoms include transformer is hot as hell after a short amount of time in RECEIVE and or voltage way above 13.8 and turning the pot down does not go blow 15+ volts.
I never had problems with them before either but for sure the base radios this is going on whether you realize it or not.
Well, guess I would start by disconnecting the power supply output from the radio and see if the xformer still gets hot - for starters. If it is not hot; then it may be a shorted cap or device somewhere downstream in the radio.
Checking or replacing the rectifier might not be a bad idea either. But if the xformer is still hot; then it may be another short in the PS or the xformer is going south. But replace the disc caps if you must, since this isn't a huge cost nor take a lot of time and let us know - please.
When I rebuilt my TRC-458, I went over all of the PS solder joints replaced the electrolytics, put new heat compound on the pass transistor and rectifier, and installed a heat sink on the regulator after replacing it. The zener diodes were OK, and so was the PS and was put back into service.
Checking or replacing the rectifier might not be a bad idea either. But if the xformer is still hot; then it may be another short in the PS or the xformer is going south. But replace the disc caps if you must, since this isn't a huge cost nor take a lot of time and let us know - please.
When I rebuilt my TRC-458, I went over all of the PS solder joints replaced the electrolytics, put new heat compound on the pass transistor and rectifier, and installed a heat sink on the regulator after replacing it. The zener diodes were OK, and so was the PS and was put back into service.
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