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View Full Version : WTD leak delta 30 pre or power amp board


09mike69
24-03-2015, 18:32
not sure which it is but it looks like this. only getting sound on one channel. ive managed to narrow it down to this in the picture. if anyone has one for sale, or any ideas on repair would be appreciated. had it given to me and im curious to see what it sounds like in stereo. thanks, mike.
The Barbarian
24-03-2015, 18:48
the Elco's {Blue Cans} or Transistors. Swapping the lot out would cost peanuts anyway..

Those boards should be the same as the 'Stereo 30 Plus amp' you can still buy BC117, BC154 {Black transistor} & the BC142/143.. Axial 10uF, 16uF & the '64uF are no probs..

Revert to service data for Re-setting IQ
09mike69
24-03-2015, 19:03
the Elco's {Blue Cans} or Transistors. Swapping the lot out would cost peanuts anyway..

Those boards should be the same as the 'Stereo 30 Plus amp' you can still buy BC117, BC154 {Black transistor} & the BC142/143.. Axial 10uF, 16uF & the '64uF are no probs..

Revert to service data for Re-setting IQ

ive been toying with the idea of swapping each one over with the other board until i find the culprit. rainy day project maybe. thanks for the advice.
The Barbarian
24-03-2015, 19:14
The caps will want doing any ways so why not just swap out those first?

The big brown Preset, id swapped that out as well that's where you reset your IQ
09mike69
24-03-2015, 21:34
The caps will want doing any ways so why not just swap out those first?

The big brown Preset, id swapped that out as well that's where you reset your IQ

the preset, is that the one that kinda looks like a dial?
The Barbarian
24-03-2015, 21:45
Yes that's it.. the output stages want re-setting if you swapping out those Driver Transistors & of course the Pre-set pot. I'll find you out the service data if you want..
09mike69
25-03-2015, 12:12
Yes that's it.. the output stages want re-setting if you swapping out those Driver Transistors & of course the Pre-set pot. I'll find you out the service data if you want..

found the culprit it was the T7 transistor (the shiny black un) its stamped bc 117, do you know where i might get one of these. thanks again, mike.
The Barbarian
25-03-2015, 15:02
Personally i would do both channels

http://www.ebay.co.uk/itm/BC117-Transistor-/251425232962?pt=LH_DefaultDomain_3&hash=item3a8a1c9842
09mike69
25-03-2015, 17:36
Personally i would do both channels

http://www.ebay.co.uk/itm/BC117-Transistor-/251425232962?pt=LH_DefaultDomain_3&hash=item3a8a1c9842

ill get it ordered, thanks for the link, and help. cheers, mike.