vmaxblues Posted January 6, 2014 Share Posted January 6, 2014 Hi All, I have recently acquired a nice Ashdown 220 Touring and have bought some ECC83's off this very site to replace the pre-amp valves in it as I think they could possibly need replacing. Never done this before and would be grateful of any help and advice, I think it should go like this: 1) unplug the speaker lead and mains lead from back panel. 2) Remove four plastic covers on top of cab. 3) Undo the four bolts holding the amp in the cab. 4) Slide out amp chassis. 5) Hopefully see the two tubes. 6) Gently, using a circular motion remove valves. 7) Gently, using a circular motion replace valves. 8) repeat all steps above. Does this seem right? Cheers Stuart Quote Link to comment Share on other sites More sharing options...
davehux Posted January 6, 2014 Share Posted January 6, 2014 You may well have metal caps over the valves, which are normally a bayonet fitting like a light bulb socket. Push down lightly and give a quarter turn anticlockwise to release Quote Link to comment Share on other sites More sharing options...
RandomBass Posted January 6, 2014 Share Posted January 6, 2014 Re points 6 and 7. The valves should be a tight push-fit. Use a very gentle rocking motion, whilst pulling them out carefully. When replacing, make sure all the pins are lined up with the holes before pushing (and again gently rocking) them home. Cheers Geoff Quote Link to comment Share on other sites More sharing options...
VTypeV4 Posted January 6, 2014 Share Posted January 6, 2014 Some pix would be good.. Quote Link to comment Share on other sites More sharing options...
Bigwan Posted January 7, 2014 Share Posted January 7, 2014 Just be careful the valves haven't been glued/siliconed in place.... Seen that before now... Quote Link to comment Share on other sites More sharing options...
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