[vwyf11]

Hey,

I’ve gotten to the testing point and I’m trying to adjust tr2 to get 3v between tp2 and tp3.  The voltage when I initially tested at these points gave me 3v steady with good consistency when changing tr2.  I moved on and could not get past step 6.  I remeasured between tp2 and tp3 and was no longer getting 3v but instead bouncing around 2.7 to 3.1v sporadically and tr2 no longer seemed to make the same consistent change when turning.  

I was checking for shorts anywhere and did find continuity between two pins on U3 either between output and adjust or output and input.  I will have to double check which pins exactly.

I’m not sure where to go from here or what may need checking

Thanks

[JPK]

I moved on and could not get past step 6
What happened at step 6?

Check the solder joints on R26, Tr2, R31.
Check the wire connections to the transformer, look for a thread that might be causing a short circuit.

I was checking for shorts anywhere and did find continuity between two pins on U3
Pins 1 and 2 are connected by a 7R5 resistor, whick way look like a short.

[vwyf11]

Sorry, step 7 was where I was hung up.  I could not match bypass on and off level.  I was reading 1VAC between pins 2 and 3 when bypass was up and 0VAC when depressed regardless of how much I turned tr1

[vwyf11]

R26, TR2 and R31 all look fine and no bridged pins etc.  The resistance on the 5k pots don’t test the way I would expect.  If I measure from the wiper to another pin on TR2 I only get resistance from 0.3ohms to about 1.6Kohms.  Not sure if there’s a problem there.  I tested between tp2 and tp3 again and the voltage swings from 2.7V to 3.1V and will never settle