Sinbad Posted February 3, 2008 Share Posted February 3, 2008 Hey all...Newbie Here... Just wonderered if any one can help with the following: I've blown some components on the input board of my Laney RGB500 combo. This is probably as a result of a dodgy connection on an active bass that i plugged into my amp. This seems to have "spiked" the input causing two fuses on the input board to blow together with capacitor C1. The fuses are not a problem but the capacitor was blown to pieces so i can't identify what the part is. I contacted Laney tech assist by email and recieved a schematic of the amp. This identified the capacitor in question C1 (immediately after the jack inputs on the diagram) as a 10 nf electrolytic 100v capacitor. So far so good, but after several attempts to source the item, all i keep coming up with are huge capacitors that are about 10 times the size of the footprint of the blown component. I've backed checked with Laney and the item has been confirmed as 10 nf. This dosen't seem to be correct. I can definately say that the charred remains of the original were a small- bog standard electrolytic capacitor (one of them purple ones about 10mm high 5mm diameter). I'm wondering if they are giving me the wrong size (should it be 10 uf??????) - Any body with the above amp prepared to slip the amp out of the cab and have a look??? Any assistance on this would be gratefully accepted - gigs coming up - dug out my Carlsbro Viper 100 but need to get my Laney working again. Quote Link to comment Share on other sites More sharing options...
Subthumper Posted February 10, 2008 Share Posted February 10, 2008 Hi, I'm struggling to find a 10nf electrolytic but have found 100v 10uf elecs that fit the physical size you mention.Its possible that laney have a missprint on their diagram, although get them to cross check the revision/mod state of your amp.Sometimes when a design is updated the components get re numbered so if your amp is say revision A they might be looking at a later drawing. Hope that makes sense. I would'nt fit a different value component until I was 100% sure. The cap I did find was in cpc. Pt no CAO4963. Make sure you get the polaity right. Good luck Cheers Just Quote Link to comment Share on other sites More sharing options...
Sinbad Posted February 15, 2008 Author Share Posted February 15, 2008 Thanks Subthumper Sorry for delayed reply, busy week. The 10uf seems to be the most likely answer to this one, spoke to a mate who does a bit of the electronics stuff. Going to check again with laney as to thre amp revision as you suggest. Thanks again. Keep on rockin Steve Quote Link to comment Share on other sites More sharing options...
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