I have more broken amps than working amps so it's time to try to fix them. I think this one might be the easiest to fix.
I can't remember what the symptoms were but it started obviously not sounding right. When I picked it up I heard a rattle. I opened it and a tiny cap was loose.
Anyway, on this small board these tiny caps (circled in red) have come off (this isn't my pic but I took it and highlighted the caps, as they are not there on mine).
The contact points on the board don't even look metal. I'm looking for guidance before I try anything because I don't want to screw this up. Can I just try to solder the caps back on? I'm not sure I can even do it, it's so tight in there. Thanks for any input you may have. I'd like to save this amp, if possible.
I went and took a pic of mine and attached it also.
edit: Just ran across a video and learned some new information. That board is the HBPIM board. Any idea where I could get a replacement of that?
I can't remember what the symptoms were but it started obviously not sounding right. When I picked it up I heard a rattle. I opened it and a tiny cap was loose.
Anyway, on this small board these tiny caps (circled in red) have come off (this isn't my pic but I took it and highlighted the caps, as they are not there on mine).
The contact points on the board don't even look metal. I'm looking for guidance before I try anything because I don't want to screw this up. Can I just try to solder the caps back on? I'm not sure I can even do it, it's so tight in there. Thanks for any input you may have. I'd like to save this amp, if possible.
I went and took a pic of mine and attached it also.
edit: Just ran across a video and learned some new information. That board is the HBPIM board. Any idea where I could get a replacement of that?
Attachments
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That board may be repairable but it would be better to replace it if the amp is worth the cost of a new board.
http://www.diyaudio.com/forums/car-audio/269608-rockford-hd-amplifier-pim-preamp-input-modules.html
http://www.diyaudio.com/forums/car-audio/269608-rockford-hd-amplifier-pim-preamp-input-modules.html
Thanks. I might be willing to pay that although it's a really steep price for that tiny board.
Someone in that thread suggests those caps leak and that's what causes the issue, is that correct? They have a 10 on top of 16v. If I try to fix the board I guess I should replace them, you think? Does the 10 mean 10uf?
Is there any specific type that would be best suited for this application? I was just going to get an electrolytic.
What about a tolerance? I don't want to skimp a few cents if that would negatively affect SQ.
Thanks for all your replies Perry. I'm planning to have a go at it myself but I'm also contacting Freeman's.
This one is $40 shipped, just as in Perry's linked thread.
Apparently Jason says you can't solder to these ceramic boards. What a load of crap. There has to be metal traces in there, right?
silver solder? do a few continuity checks to insure darkened traces are indeed open. It looks OK cept some wear.
http://yadda.icm.edu.pl/yadda/eleme..._plartme20nr201-22006me1-22006achmatowicz.pdf
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Your board looks like a goner, even the op amp's solder joints look crummy. Best bet would be to purchase that board new. All those dark short traces are film resistors, if someone had a schematic for that board then may be someone could make a few but I honestly don't see them priced for any less than 30.00 for custom made ones so might as well go with the new ones.
Main reason I stay away from the HD but there are others that 1moreamp already mentioned in other threads.
Main reason I stay away from the HD but there are others that 1moreamp already mentioned in other threads.
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Yeah, it's a goner. I am going to move on to other amps I have for now and come back to this when I feel like ordering the board. I thought more highly of the HD amps but apparently they are just not quite built as well as I thought they were. Apparently the slightly older ones were a bit more solid. Thanks for the help. I'll re-post in here after I address it.
