Quote:
Originally Posted by stonehopper
Quote:
Originally Posted by Station X
(snip) Are you sure that the new transistors are wired in correctly?
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I though the layout of wires as the exude from the base of the units is an a triangle that is opposite to the triangle of holes in the board. The original OC81's wires were located in line, so the pattern appears irrelevant.
Derek |
I am not fully convinced the transformer is burnt, it doesn't happen that often in a battery set. The transistor polarity needs to be rechecked, it does give the impression the emitter collector is back to front.
The base bias resistors are unlikely to change value very much but they do sometimes break at the leads, if the lower one is open this would give a strange base voltage reading.
But the OC81's are probably damaged by now if they have been getting hot.
G