trinityamps.com

Completed Trinity 18 watt plexi combo yesterday and have virtually no sound coming out of the normal channel high or low input. TMB channel works fine. Here are the things I've done so far:

1. All voltages have been checked, while some are slightly higher than listed, I don't think there is a problem here.
2. Wired the imput jacks as per the combo spec. I've checked them multiple times and even rewired the normal channel.
3. Volume and Tone pot are wired correctly. I did not disconnect them to check them, but when I check them in place with an ohmmeter, they appear to be fine.
4. I jumpered the normal channel from the 3 lug strip to the high channel 3 lug strip with no improvement.
5. I re-did the shielded cable terminations to the lug - no improvement.
6. I've checked all wiring multiple times and can't find a mistake.
7. Tried multiple known good tubes.

With a cable plugged into the normal channel, minimal static can be made it the volume is up all the way. Also, with volume up all the way you can't faintly make out sound from strumed strings, but very faint.

I am wondering if the input jacks are bad, but this seems improbable.

Any suggestions would be much appreciated.

Chris

Please disregard this post, I figured out the problem. I wired my board mostly based on the picture posted in the help section. It turns out that a jumper is needed between the 3rd terminal from the right and the middle terminal just beneath the 3rd terminal from the right. I noticed this on Stephen's picture of his modified plexi (cascade mod). This is shown on the schematic, but I did not notice it as I would think this jumper would be on the bottom of the board.

Congratulations!

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