Yeah, I was thinking about that pot after I posted that... Oops. Oh well, reversing the leads is easy!
Hook up the good channel's inputs to the other channel of the board. If it is still dead, it might be board, if it works it's probably switch or connection.
Oh, separate both input channel's grounds. The last photo showed only one ground for all.
Hook up the good channel's inputs to the other channel of the board. If it is still dead, it might be board, if it works it's probably switch or connection.
Oh, separate both input channel's grounds. The last photo showed only one ground for all.
My post (basnkeys) #240.
As for channel down I would double check the selector wiring... make sure you're not shorting somewhere.
This is a good time to think of using 9volt batteries as a power supply. If there is nothing shorting this buffer will operate for hours on a pair of them but only for minutes if there is a short somewhere... an easy, passive check. It would give you a definite direction.
As for channel down I would double check the selector wiring... make sure you're not shorting somewhere.
This is a good time to think of using 9volt batteries as a power supply. If there is nothing shorting this buffer will operate for hours on a pair of them but only for minutes if there is a short somewhere... an easy, passive check. It would give you a definite direction.
Get this .... checked all resistor values and their correct .... Continuity test on selectors proves good .... reversed the leads on the Pot and the same channel has sound ..... WTF
Input 1 has good sound ,but one channel only , Input 2 0 , Turn the selector to 3 ... nothing out of the good side ,but very out put on the channel that is silent when Input 1 is selected
this could drive me back drink !
Input 1 has good sound ,but one channel only , Input 2 0 , Turn the selector to 3 ... nothing out of the good side ,but very out put on the channel that is silent when Input 1 is selected
this could drive me back drink !
Bypass the pot and switch, wire your old preamp to the input direct to the board.
Do you get good sound on both sides?
Do you get good sound on both sides?
I get sound out of 1 channel only ....
I have no switch , just the Pot and selector . Input is R2 and L2 , I have jumpers from R1 and L1 to centre and nothing connected to R2 and L2 ...
Take signal from Bryston output into B1 input ? Do I just disconnect both the Pot and selector or just the pot ?
Thanks Guys ... I'll check in the morning .
Rich
I have no switch , just the Pot and selector . Input is R2 and L2 , I have jumpers from R1 and L1 to centre and nothing connected to R2 and L2 ...
Take signal from Bryston output into B1 input ? Do I just disconnect both the Pot and selector or just the pot ?
Thanks Guys ... I'll check in the morning .
Rich
Hi Rich;
Surely if you are using R2 & L2 inputs you should link the same numbered pads to the centre set of pads or bypass the pcb tracks and connect the wires from the selector switch directly to the centre set of solder pads on the board.
Never found out about 6L6's suggestion from photo post #254 regarding bringing negative connection to the left input... you are depending on the common from the right (working) side. Try discrete hard wiring.
Using the #2 inputs with no elector switch you need to jump L2 and R2 to center as you had in before. Once again... try using 9v batteries as a power source, this will tell you within 1/2 hour if you have a short.
Why did you change the center jumper??
Anyway, put the jumpers back the way you had them (L2 and R2 to center). Everything else looks correct, as best as can be seen through the wires.
Anyway, put the jumpers back the way you had them (L2 and R2 to center). Everything else looks correct, as best as can be seen through the wires.
My bad had forgotten to recheck the pic in post 254 had simply gone on Rich's description in post 266😀
Ok, I have bypassed selector leaving the pot connected and still the same problem . Next I'll bypass the pot with the selector back in the circuit . Can I bypass the pot by disconnecting it completely from the board , ccw , w and cw . I will run the input signal from other pre when doing this ?
Leave your jumper fromL2 and R2 to the center. Now disconnect the pots and simply jump CW to W... this will replicate having the volume pot at full volume.
How did you bypass the selector?
Did you remove the wires?
If it is wired incorrectly or defective, jumpering will not help
Did you remove the wires?
If it is wired incorrectly or defective, jumpering will not help
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Its the board ...... Bryston wired as a source - output from B1 to Aleph and still the left channel down . I have another B1 board that I can populate .
Back in hour .... Already have most of done .
Thanks , Rich
Back in hour .... Already have most of done .
Thanks , Rich
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