richukuk Posted August 27, 2017 Share Posted August 27, 2017 Hi everyone, I turned my Ashdown ABM 500 on last night and there was a massive hum and the VU meter is stuck permanently on maximum. This is without me even plugging in my bass. The hum is only on with volume and gets louder if I turn up the volume. Does anyone have any ideas what is causing this please? I've tried different sockets, leads, disconnecting speakers etc Thanks! Quote Link to comment Share on other sites More sharing options...
richukuk Posted August 27, 2017 Author Share Posted August 27, 2017 Update, I have tried it again this morning and it is working apart from until I turn on the Input EQ and then I get a loud hum. The VU meter is still stuck on max too. Quote Link to comment Share on other sites More sharing options...
2elliot Posted August 27, 2017 Share Posted August 27, 2017 Phone Ashdown. They are very helpful. Quote Link to comment Share on other sites More sharing options...
stingrayPete1977 Posted August 27, 2017 Share Posted August 27, 2017 Valve knackered maybe? Quote Link to comment Share on other sites More sharing options...
naxos10 Posted August 27, 2017 Share Posted August 27, 2017 Earthing problem? Quote Link to comment Share on other sites More sharing options...
Kevin Dean Posted August 27, 2017 Share Posted August 27, 2017 ashdown are really helpful , give them a call . Quote Link to comment Share on other sites More sharing options...
Graham Posted August 28, 2017 Share Posted August 28, 2017 Contact details here http://basschat.co.uk/topic/304887-ashdown-customer-service/page__fromsearch__1 Quote Link to comment Share on other sites More sharing options...
Bernmeister Posted September 1, 2017 Share Posted September 1, 2017 Would be good if you could keep us updated. Its always good to hear how manufacturers respond to their customers problems Quote Link to comment Share on other sites More sharing options...
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