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I have a problem with a Cinemeccanica power rewind bench. This uses the D07820B triac based controller board. The problem is that on power up the on board relay is extremely sluggish to engage (several minutes). I have changed the two electrolytic capacitors as a precautionary measure to no effect. Can anyone find a schematic for this board, I could then find an equivalent relay. After eventually powering up the board then does work correctly so the problem may not actually be with the relay itself but how it is driven. The board would seem to be a late version, complete with slider speed control. The triac is working fine. Many thanks
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