Logic PLX24

Hexhclass

Member
2010-06-22 6:08 pm
usa
hi all

This amp came in with R20P,R49 and R49R burnt.R49 and R49R both still read about 10k.R20p was replace with a 10 ohm but base on other amps i have here i think it should be 22 ohm.Any one no what the right values for these resistors?

R49 and R49R are connected in series across two transistors in the audio section.(Q15 and Q15R (D1302) .They are across the emitters.The amp has both _ + rail and reg voltage.The output is very low on both ch.If i bridge the emitter and collector of either transistor i get clean loud output.Both transistor test good out of the board.With black prop on GND the voltage on the transistor is in the mv range any idea?
 

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