one channel is out

[roberto]

if i switch the dynakit to mono shouldnt both sides work then? that is not the case either that what is confusing to me also

On the contrary, this is telling that the right channel is not working. You are feeding the same signal to both channels...and the right is not working. To confirm this in a very easy step:

The left channel is working, then just one cable from the preamplifier, does not matters if it is right or left RCA coming from the preamplifier. Connect to the left channel of the amplifier, yes it works. Now this same working RCA connect to the right, it does not work. Conclusion: right channel of the amp is not working.

Happy listening!

[roberto]

While doing this test above, it is wise to turn the power off the power amp each time you are going to do changes. Wait at least 1 minute to have all power supply capacitors to be discharged.

[Lotto]

speakers are checked and working when i swapped jacks i only swapped them at one end is that not right?

[AnotherJohnson]

speakers are checked and working when i swapped jacks i only swapped them at one end is that not right?

Yes

[roberto]

speakers are checked and working when i swapped jacks i only swapped them at one end is that not right?

To have a truth table, it is important to follow the numbers in sequence.
A) Test:
1) right channel is not working.

2) if you use the left channel RCA to the input of the amplifier, now right channel is OK.

Possible answers:

Amplifier is OK. Both channels are working in the amplifier. The right RCA cable could be bad or the right channel of the preamplifier is not working.

B)Test:

Swap the position of the cable: RCA left channel connected at the output of the right channel in the preamplifier and the right output channel to the left Channel of the amplifier.

Possible answers:

1) Right channel now working. The left channel is connected to the right channel. And it is working.
2) Both channels at the amplifier are OK. Or bad RCA cable or bad right channel of the pre.

C) Test: checking the RCA cable.

1) Cable has two colours of RCAs, the white is the left. Connect the white to the right output of the preamplifier to the left input of the amplifier.

Possible answers:

1) Sound OK? The preamplifier is OK, RCA red (right) cable is bad.
2) No sound? Bad right channel in the preamplifier.

[Lotto]

thank you all for your suggestions
i had an old ipod that i plugged directly into my dynaco and found it is only playing out of one channel
thereby eliminating that it is not the conrad johnson preamp it id the dynaco that has the problem
thank you all again'
now it off to the dynaco forum!!

[admin]

Glad you were able to narrow it down. Once fixed, let us know what ultimate component failure occurred.