I have a hartke HA5500 bass head here I'm trying to fix for a buddy and I'm having a heck of a time trying to figure this out. Mainly because it's so intermittant. problem is, the speaker protection relay clicks off at times but will start working perfectly other times and i can play the thing even loudly for 30 minutes and it won't happen. then another day I'll power it up and the relay will click on, then within 30 seconds it'll click off and will not click back on again till i turn it off and usually have to wait a bit. I thought if there was a shorted output or such wouldn't it always click off? Or a device thats heating up....if that were the case it sure as heck wouldn't allow me to play it loud w/o issues for 30 minutes.
Of course the only thing i could think of given these details is a bas solder joint or connector. But i have chopsticked the entire amp, boards, components, wiring etc ad nausium and never triggers a thing. I can email a schematic to anyone who is willing to look at it. But I think it's possible a older revision. Anyways, even any thoughts off the top of your head would possibly help, as this is getting to be extremely time consuming and i DO have a life....well, I DID B4 this anyways.
Of course the only thing i could think of given these details is a bas solder joint or connector. But i have chopsticked the entire amp, boards, components, wiring etc ad nausium and never triggers a thing. I can email a schematic to anyone who is willing to look at it. But I think it's possible a older revision. Anyways, even any thoughts off the top of your head would possibly help, as this is getting to be extremely time consuming and i DO have a life....well, I DID B4 this anyways.
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