essexbob Posted September 16, 2019 Share Posted September 16, 2019 Hi all, I picked up a Marshall IBS 100w head at the weekend for literally a few quid. It works ok and is quite nice in its own way, but makes really loud pop sound through the cab when switched off. It sounds like something discharging. It is proper loud, not a normal shutting down sound. Any ideas of a fix? I looked inside and no burn marks - some huge capacitors in there! cheers. Quote Link to comment Share on other sites More sharing options...
BreadBin Posted September 16, 2019 Share Posted September 16, 2019 Pull the speaker lead before you switch off? 😁 Quote Link to comment Share on other sites More sharing options...
essexbob Posted September 16, 2019 Author Share Posted September 16, 2019 😀 yes, I've been doing that but I'm likely to forget. And I always need something to tinker with (stop sniggering at the back.) Quote Link to comment Share on other sites More sharing options...
KiOgon Posted September 16, 2019 Share Posted September 16, 2019 A PMR acros the power swich will sort it, for example: https://www.ebay.co.uk/itm/1x-RIFA-Kondensator-100n-100R-X2-250V-SH-PMR209-RC-UNIT-0-1-F-uF-nF-C69k/264043210759?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D59623%26meid%3D275ba97cd71f4aa899873ac674304144%26pid%3D100010%26rk%3D6%26rkt%3D12%26sd%3D173895418110%26itm%3D264043210759%26pmt%3D0%26noa%3D1%26pg%3D2047675&_trksid=p2047675.c100010.m2109 Quote Link to comment Share on other sites More sharing options...
essexbob Posted September 17, 2019 Author Share Posted September 17, 2019 Thanks, I'll get onto that. Likely to be resumed when I get one and realise I haven't a clue how to wire it in. 😀 Quote Link to comment Share on other sites More sharing options...
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