Sony xm2000r - Guzzling power, need to trace the problem.

[Agi]

Yeah, it's out from the board. I'll try and get a replacement for that then. I guess this here would be causing the excessive current draw... but would it also cause the fx counterpart to get warm too?

 

[Perry Babin]

The outputs are essentially in series between the rails (plus/minus power supply). If one's shorted/leaking, it tends to cause excessive current flow through the other outputs.

 

[Agi]

I understand now. Thanks for all your help . Still lots to learn though .

I'll get a new Fs and report back. The best I can find is 12 of them for sale in USA ebay, I only need one...

 

[Agi]

Well I think that's done it!


In went the new fs70, sinked up and nothing got warm. Fuse didn't blow, so on went the speaker, and I got some LOVELY test tones out of it, no distortion whatsoever, no flat tops or bottoms, nothing bent around, just lovely waves, at 100hz, 1khz and 10khz. I played some music and it sounds perfect! I'm just in the process of re-doing the thermal grease, then i'm popping it in the car for a real test .

Thank you ever so much for your help PB .