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open pots

General HP40W, Weird combination of component failures..

Got this one working fine this evening. Had the typical full power tx with no modulation failure. AM Amp regulator TR-51 was shorted. That immediately fixed that issue. Then noticed weird RF output power levels and lack of stability. Found both VR10 & VR11 were open. Neither of them look diddled...
- radio429
- Thread
- Aug 30, 2022
- bad vr's hp40w component failure open pots
- Replies: 6
- Forum: General CB Services Discussion

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