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BPR40: no voltage on collector of PA
Posted: Fri Aug 27, 2010 5:50 am
by arlojanis
I have a VHF BPR40 Mag One with intermittant no voltage on collector of power amp transistor. Has anyone repaired one like this before? Does anyone have a schematic or board drawings?
Re: BPR40: no voltage on collector of PA
Posted: Sun Aug 29, 2010 10:00 pm
by Andreas
I have the schematic.
Your problem with the radio, must be the Drain coil or R417!
If the radio is completely dead,you may have a problem with the battery or the contacts.
Andreas
Re: BPR40: no voltage on collector of PA
Posted: Mon Aug 30, 2010 5:17 am
by arlojanis
Receiver and transmitter low level stages work OK. The final transistor is dead because there is no voltage on the collector. Can you share the schematic?