Check ground to grid, ground to cathode, check that grid-ground resistance is dependant on volume position, and check input jack-ground DCR. If you get somethig unexpected, post your findings.

Some ballparks, input jack-ground ~100kOhm
grid-ground 0 at minimum vulume, 100k at max.

regards,
Douglas

I am going to be quite curious to hear what you finally discover the problem is. I wish we were neighbors, this whole thing would've been settled over a diet Dr.Pepper before it even happened...
regards,
Douglas

one more thing. Try and get somebody else to look at what you have done, it would appear that the 'bliders' are on, which makes it very hard to proof your own work. Please don't take offense at my bluntness, I mean no slight. Print out the basing diagrams and perhaps the teaching of the student inspector will illuminate the problem.

Don't go poking around on the CCS with the probe while it's on. Don't ask.

Give me a call later if you want. We can go through Damir's schematic and compare construction and voltages. I'll be up until 1 or 2...Colin

• http://audioroundtable.com/GroupBuild/messages/424.html

I would re-word a bit. Don't check between pins one and nine, repeat the measurement proceedure for pins one and nine ( the anodes ).

If you attach negative lead to the cathode( pin 3 for pin 1 anode , and pin 6 fo the pin 9 anode ) or to of the LED string, you can measure current w/o extinguishing the LED's. Not exactly remomended, as there is less room than the ground terminal offers.

Thanks again Colin for teaching me that cool trick.
regards,
Dogulas

Did you get the LED dimming problem sorted out? If you went with the Belden cable, be sure only one end of the connection is grounded. It sounds like your losing current to the ground. Look for nicks or cuts in the cables's wrap. Also, test continuity between the signal path and ground, there should be none.

PLEASE give me a call.....Colin

• http://audioroundtable.com/GroupBuild/messages/934.html