kendall Posted February 2, 2015 Share Posted February 2, 2015 Hi there I have a Laney combo which has worked fine for years. Lately its taken to just not making any sounds. If I leave it for 5 minutes, I switch it back on and all is good for a while. I use it most days for about 30 - 60 mins, and this happens randomly every couple of weeks. Any ideas? Quote Link to comment Share on other sites More sharing options...
paul_5 Posted February 2, 2015 Share Posted February 2, 2015 Thermal trip or dry joint? I had a digital piano that did this - it was the speaker protection relay that had gone, so whilst everything powered up there wasn't any output. Quote Link to comment Share on other sites More sharing options...
chris_b Posted February 2, 2015 Share Posted February 2, 2015 That's God's way of telling you that you need a better amp. It's also the reason I don't like combo's. When one part fails you can't use the other part. I'd take it to a tec, get it working, then replace it. Quote Link to comment Share on other sites More sharing options...
kendall Posted February 4, 2015 Author Share Posted February 4, 2015 [quote name='chris_b' timestamp='1422872903' post='2677660'] That's God's way of telling you that you need a better amp. It's also the reason I don't like combo's. When one part fails you can't use the other part. I'd take it to a tec, get it working, then replace it. [/quote] Thanks for the replies chaps. I've now got a good excuse to look for a new toy! Not a combo I hasten to add. Quote Link to comment Share on other sites More sharing options...
Count Bassy Posted February 4, 2015 Share Posted February 4, 2015 Sounds like a dry joint to me. Probably an easy fix. Could be anywhere, but I'd look around heat generating devices first, eg rectifiers, power resistors. Quote Link to comment Share on other sites More sharing options...
kendall Posted February 7, 2015 Author Share Posted February 7, 2015 Took amp out of cabinet this morning, pushed a few wires randomly, found one that was loose. Reconnected it - job's a goodun! Almost disappointed as have been looking at new amps........ Quote Link to comment Share on other sites More sharing options...
rmorris Posted February 7, 2015 Share Posted February 7, 2015 Was it a wire into a connector or straight into a pcb ? Quote Link to comment Share on other sites More sharing options...
kendall Posted February 8, 2015 Author Share Posted February 8, 2015 [quote name='rmorris' timestamp='1423334749' post='2683709'] Was it a wire into a connector or straight into a pcb ? [/quote] Into the PCB (I think) the green plastic thingy right? Quote Link to comment Share on other sites More sharing options...
Grangur Posted February 8, 2015 Share Posted February 8, 2015 PCB : Printed Circuit Board I had a similar problem with a MarkBass amp. Mine was a poor Speakon socket. Any poor connection can cause heat, which will cause the thermal cut_out to do its job. Pleased you sorted it. Quote Link to comment Share on other sites More sharing options...
kendall Posted February 8, 2015 Author Share Posted February 8, 2015 [quote name='Grangur' timestamp='1423381033' post='2684035'] PCB : Printed Circuit Board [/quote] Aha - so that's what it stood for! Thanks. Continually learning. Yeah the heat thing makes sense, it worked then cut out. Have so far hammered it for a few hours straight and all's still good. Cheers to all. Quote Link to comment Share on other sites More sharing options...
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