Home |
Search |
Today's Posts |
#1
|
|||
|
|||
To Alan Douglas: Help with a Precision 660
I was given your name as being the absolute tube tester guru of all time. I
recently purchased a Precision 660 off of ebay. The thing powers up, but I have no idea of exactly how to use it (the chart is not plain about switch positions plate, grid, cathode, etc.) Also, I think that the B+ supply is out on it. I get no meter reading at all, not even for the line check (I don't know if I'm doing that right, either, though.) A check of the meter with my DMM shows continuity of the coil (~16 ohms). If I set up the switches the way I think they are supposed to go (e.g. cathode and alternate filament to Normal, plate to Test), then I actually am getting ~45 volts NEGATIVE between the plate and cathode pins on the socket.. Sure hope you can help me sort this out. Worse comes to worst, I am willing to send it to you for repairs. TIA Take care, and stay well. Brenda Ann -- Illigitimus non tatum carborundum *Don't let the *******s wear you down* |
#2
|
|||
|
|||
"Brenda Ann" wrote in message ...
I was given your name as being the absolute tube tester guru of all time. I recently purchased a Precision 660 off of ebay. The thing powers up, but I have no idea of exactly how to use it (the chart is not plain about switch positions plate, grid, cathode, etc.) Also, I think that the B+ supply is out on it. I get no meter reading at all, not even for the line check (I don't know if I'm doing that right, either, though.) A check of the meter with my DMM shows continuity of the coil (~16 ohms). If I set up the switches the way I think they are supposed to go (e.g. cathode and alternate filament to Normal, plate to Test), then I actually am getting ~45 volts NEGATIVE between the plate and cathode pins on the socket.. Sure hope you can help me sort this out. Worse comes to worst, I am willing to send it to you for repairs. TIA Take care, and stay well. Brenda Ann Hey Brenda Ann! Nice to see you over here on RAT. Take care! |
#3
|
|||
|
|||
As Nothing40 said, welcome to our lair.
BWUAHAHAHAAAAAAAAAA! ;-) -- Gregg *It's probably useful, even if it can't be SPICE'd* http://geek.scorpiorising.ca |
#4
|
|||
|
|||
Hi,
I was given your name as being the absolute tube tester guru of all time. That would be Chris Haedt. I only wrote a book; he works on tube testers all the time. Sure hope you can help me sort this out. Worse comes to worst, I am willing to send it to you for repairs. Chris could do that, but it's halfway around the world and even though it's an APO address, there is a good chance of damage in shipment. With any luck, the advice on rec.antiques.radio+phono or by email should help you get it running. Cheers, Alan |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
New Alan Parsons album coming | Pro Audio | |||
New Alan Parsons album coming | Pro Audio | |||
Alan Smart C2 Stereo Compressor , Like SSL , Neve Alan Smart C2 Stereo Compressor , Like SSL , Neve FA : Alan Smart C2 Stereo Compressor | Pro Audio | |||
FS: Precision Fidelity Pre-amp/Distech Power Amp | Marketplace | |||
Trying to track down: Alan Robinson | Pro Audio |