OK I will check the clamps again. I find the back panel/clamp thing to be inadequate design wise. I am using compound at least, there wasn't any in there when I got it.
Make sure that all of the tabs are even.
Are you sure that you're tightening the cover sufficiently?
Have you looked into the ends of the amp (endplates removed) to confirm that the tabs are deflecting when the cover is tightened?
Are you sure that you're tightening the cover sufficiently?
Have you looked into the ends of the amp (endplates removed) to confirm that the tabs are deflecting when the cover is tightened?
Both times it happened in bridged mode, 4 ohm. The speaker wires have been directly wired due to the common missing plug thing.
I checked for front L/R, rear L/R separately, then bridged the front side to one speaker and the rear side to the other, as you're supposed to.
But I wonder if mixing these up would cause this problem, and there is some other wiring mistake in the inputs or something that I'm not aware of. I labeled everything ahead of time but say if the RCAs were reversed.
I checked for front L/R, rear L/R separately, then bridged the front side to one speaker and the rear side to the other, as you're supposed to.
But I wonder if mixing these up would cause this problem, and there is some other wiring mistake in the inputs or something that I'm not aware of. I labeled everything ahead of time but say if the RCAs were reversed.
I don't think it's that cover issue. I know what you're going to say I think but it just wasn't running very long at all. Barely started one song. I removed the cover right away and nothing was even the slightest bit warm.
Well actually one of the tabs on the cover, right by that output, is bent down a little, which would hamper its functionality it would seem.
Before you clamp the cover down, press every transistor down and confirm that the transistor readily sticks to the heatsink without springing back up. If it's flat enough to be held down by the compound, it's likely flat enough.
Remember to look into the end of the amp to confirm that the tabs are being pushed up by the transistors when the screws are tightened.
Remember to look into the end of the amp to confirm that the tabs are being pushed up by the transistors when the screws are tightened.
I wonder if putting foam strip on the tabs would do more harm than good.
The thermal tape is non-adhesive. Perhaps compound under it would help.
Thank you for your help.
The thermal tape is non-adhesive. Perhaps compound under it would help.
Thank you for your help.
OK I straightened a few bent tabs, added heavy compound below tape, added heavy compound on each device, straightened all devices to lay flat (just pushing each with my finger they stick down flat and stay), torqued down back panel very well. Ready to test again.
When you test, use a current limiter or a 10 amp fuse. It may save parts if there is still a problem.
Like 3 or 4 songs in, sink is warming up little. Never played this long at least, so if it fails again I probably just need to go back and improve the heat sink mating more. I think it is really really good now though.
Thank you very much Perry for your help, knowledge, and patience.
Thank you very much Perry for your help, knowledge, and patience.
I've been rechecking the clamp screws when it warms up.
It seems like it is repaired. Sounds very very good, better than I was expecting honestly.
I don't suppose anyone has a solution for the speaker output plug problem. I remember seeing somebody did a custom deal.
It seems like it is repaired. Sounds very very good, better than I was expecting honestly.
I don't suppose anyone has a solution for the speaker output plug problem. I remember seeing somebody did a custom deal.
The spacing is a bit odd.
I know this probably isn't what you want but I'd remove and keep the terminal in case you find a mate for it.
Some people solder wires to the board and go out a few inches to a screw-type terminal strip. Something even easier, go out a couple of inches to male/female push-on connectors.
These aren't fancy but they do no harm, either.
I know this probably isn't what you want but I'd remove and keep the terminal in case you find a mate for it.
Some people solder wires to the board and go out a few inches to a screw-type terminal strip. Something even easier, go out a couple of inches to male/female push-on connectors.
These aren't fancy but they do no harm, either.