Oh man, I broke my class D amp. Make fun of me. Then help.


So... I made a new pair of super fancy interconnects this evening. Of course I was on auto pilot on the second one, especially the last connector. And, of course I always test my DIY cable projects before install..

Except tonight. Installed the ICs and all I hear is clicking. Not loud, and independent of the volume on the pre. Independent of source. Weird. I shut everything down and figure maybe, for the first time ever, I miswired a cable, so I pulled the new ICs and tested. Sure enough, I crossed my signal and ground. I repaired my mistake, reinstalled and now the amp the crossed IC went to is jacked.

The volume is much lower than the other channel, there is distortion during strong high frequency signals and the sound drops out during strong low frequencies signals. The other amp is fine. I swapped channels coming from the pre and the problem stayed with the amp. I doubt it is the speaker, as there were no sudden loud noises. Just the innocuous clicking...

So, what did I fry? Some kind of capacitor? Or everything? The amp is a Ghent audio monoblock, which is class D and uses ICEpower a/s modules. It is a GA-M500. Here’s its webpage: https://www.ghentaudio.com/amp/ga-m500p.html

I’m fine sending it in for repair, but if anyone has either knowledge of amp design or the unfortunate luck to have done this, I’d love to just fix it myself and save a lot of sending it around the world. Also, feel free to make fun of me. I deserve it. Such are the consequences of hubris.

If you’re wondering, I used KLEI pure harmony connectors, which have two identical looking tabs, one on each side, to solder the signal and ground to. If you look even remotely closely you can easily tell which is the ground.. but it’s not at bad as if I had done this with a more traditional RCA connector. That would have been really pathetic. 

Also. Recommendations for repair shops please.

Ugh.

128x128toddverrone
Yes, insane....reference:
https://www.youtube.com/watch?v=aolMV0oNCBE

I intended to 'be a freak for the rest of my life."  Mission accomplished. *G*

Thanks asvjerry for turning me on to Bonzo Dog. I know there must have been a crazy amount of silly, insane people pal-ing around with the Beatles (Harry Nilsson, etc.) and these guys are way out there. Can you imagine what the parties must have been like?
Bonzo Dog Dooda Band. What a name. The music, despite a silly edge, is actually quite amazing!
The Bonzo Dog Doo-Dah Band are who is playing in the subterranean room in The Beatles Magical Mystery Tour movie. They made a bunch of incredible albums, containing songs such as "Jazz (Delicious Hot, Disgusting Cold)" and "Can Blue Men Sing The Whites?". Great, great group. Member Neil Innes was later responsible for the great Beatles parody band The Rutles (with Monty Pythons Eric Idle), who made one album and a very funny movie. I saw The Rutles live at The Troubadour, and they were fantastic! I didn't get to see The Bonzos live, but have a couple of old friends who did, at The Fillmore in SF.