05-05-2018, 02:40 PM
The never dying thread... Who'd a thunk??
This P808B had a leaky output transistor, current was over 40ma just idling or double what these usually draw.. Mostly a parts radio, it's time for a new lease on life...
I present P-808-FRANKEN...
Had been looking for a purpose for the little LM386N audio amp, has a new home in this radio... With enlarged speaker and approx six or seven times more audio power, it's a thumper compared to stock... Best part is it only draws around 10-12ma at normal volume, at higher levels it does shoot up to 25-30ma...
New amp in lower left, I skipped the connectors for power and audio input, did use jack for speaker(raided a junk computer for connector)... Chassis playing when I shot pict... Volume level on board is set and forget, original control functions as normal... If fact with unit in case and back removed, there's nothing obvious going on... Well the sharp eyed may notice a few empty holes in PCB traces...
This P808B had a leaky output transistor, current was over 40ma just idling or double what these usually draw.. Mostly a parts radio, it's time for a new lease on life...
I present P-808-FRANKEN...
Had been looking for a purpose for the little LM386N audio amp, has a new home in this radio... With enlarged speaker and approx six or seven times more audio power, it's a thumper compared to stock... Best part is it only draws around 10-12ma at normal volume, at higher levels it does shoot up to 25-30ma...
New amp in lower left, I skipped the connectors for power and audio input, did use jack for speaker(raided a junk computer for connector)... Chassis playing when I shot pict... Volume level on board is set and forget, original control functions as normal... If fact with unit in case and back removed, there's nothing obvious going on... Well the sharp eyed may notice a few empty holes in PCB traces...
Tom