Help! My Yorkville combo died on a gig!

[Atshen]

Yup, that's right, my trusty Yorkville XM200 combo died in the middle of a gig. No magic smoke, no preliminary symptoms. I was able to finish the gig by going direct though, so it was OK.

The next day, I opened up the head and changed the fuse, new fuse blew up right away. What's going on with that sucka?

Thanks!

 

[MrLenny1]

Sounds like power supply problem. Off to the shop.
I own a Class D amp and worry about the same issue you had so
I went out and bought another Class D head for peace of mind.

 

[BassmanPaul]

I own a few Class D heads and power surges never cross my mind.

 

[Atshen]

I'm sending it to the shop, we'll see.

 

[2liveis2die]

Had the very same problem. I think it was a bad transformer. Cost me 65 bucks to have fixed. No problems since.

 

[Bim1959]

Transformers vary rarely go bad, and even if they do $65 won't cover it. I know, as I had a transformer in my SVT 3PRO go up in smoke last weekend. The transformer alone will set me back $350.

In your case I'll bet it's an output transistor.
When your fuse blew each time did it turn black or have a black spot or ring around the fuse? If so that shows there's a direct short in an output device. Take it to a shop and tell the tech you want a list of the parts that went bad.

 

[Atshen]

Thanks guys. I could manage a 65$ fix, but 350$ could almost buy me a brand new head! We'll see what the tech says. I'll keep the thread updated.