Members audiosalvage64 Posted June 28, 2013 Members Share Posted June 28, 2013 I bought a used b52 with original tubes and very noisy I might add. I relaced them with jj's and sound was better but now I hear motorboating as it gets hotter. There is not much info about these amps to go by. Should I try a cap job or will the tranny go next or should I cut bait and find another amp.....modeling aaaaaaaaaaaaaaah! Link to comment Share on other sites More sharing options...
Members Old Fart Rocker Posted June 28, 2013 Members Share Posted June 28, 2013 Ok, I'll chime in. Caps and tranny's are expensive repairs. I don't know what you paid for the amp, but they were somewhat of a budget amp to begin with, iirc. You may find that the cost of repairs are equal to or more expensive than the amp.My best advice is to find a local amp tech and take it in for an estimate and see what it's going to cost. That way you can make a more informed decision. Link to comment Share on other sites More sharing options...
Members Steve2112 Posted June 28, 2013 Members Share Posted June 28, 2013 Keep in mind there will likely be a bench fee (of course). So decide how you want to spend the 50 bucks. Know the problem with this amp or put toward the next one. Link to comment Share on other sites More sharing options...
Members audiosalvage64 Posted June 28, 2013 Author Members Share Posted June 28, 2013 I guess I'm now trying to estimate what the caps will cost as I'm fully capable of doing the work myself. I just don't know how far to dig into it before enough is enough. I'm not sure of the quality of the trannys or other components as I can't replace everything. but if it's just a caps thing, I can do that. I don't know why all the mystery with this amp is, you can't find any schematics or background accept for a few rants and complaints. Link to comment Share on other sites More sharing options...
Members HKSblade2 Posted June 28, 2013 Members Share Posted June 28, 2013 Was the speaker swapped out? Check if it was that the impedance is to spec. I doubt its caps, but it is a possibility. I would look closely at the board and inspect the solder connections on the pc board including areas that have higher heat environments. Tube sockets, power resistors, filter caps, and so on. Look for fractured solder or over heated areas where the solder might look kind of dull gray. Link to comment Share on other sites More sharing options...
Members audiosalvage64 Posted June 28, 2013 Author Members Share Posted June 28, 2013 It's the original speaker and I will go over the board and re heat any questionable solder. Link to comment Share on other sites More sharing options...
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