13-03-2014, 11:10 PM
(13-03-2014, 09:57 PM)Refugee Wrote: 220 ohms should dissipate just over 9 watts if there is a short circuit so 10 Watts is fine.can.t get a 220 ohm @ 10 watts local. the other resistor in power supply is 15 watt no resistance marks. I think i can get a 15 watt 150 ohm local will that do. I haven't tried the mp3 player yet i don't wan't to fire it up until i can get a resistor in power supply then i can move forward. thank you richie
The final value will depend on when you begin to get audio out of the board.
It looks like it was the same size as the other resistor and that looks like a 10 what rating.
Judging by the black patch on the board I would guess that it has run at about 4 times its rating for a few minutes before failing.
Have you tested the amplifier with an MP3 player yet?






