Recent content by joec999

  1. J

    Phase Linear 6000 Delay unit

    Hi all, I have a Phase Linear 6000 Delay unit that doesn't delay the signal between front and delayed channels. I found a break in the output coil of the spring delay and fixed that, the resistance readings seem okay (190/185 Ohms input/output) but still no delay/reverb action. Cleaned and...
  2. J

    Phase Linear 5100 Digital Tuner

    I performed a full FM alignment. I found the existing adjustments to be reasonably close and only required some minor tweaking. The scan action is the same as before, so this may be normal operation. (only a minor annoyance if it is) If someone has information to the contrary, let me know.
  3. J

    Phase Linear 5100 Digital Tuner

    Hi Ed, Heating/cooling the TC9124AP would make it stable/unstable. I pulled the IC to swap it with one from another unit at which time I noticed a severed jumper near pin 1 of that same chip. The severed ends were barely touching each other. I replaced the jumper and swapped the IC (just...
  4. J

    Phase Linear 5100 Digital Tuner

    Ed, Thank you for the quick reply. I will check on those things you have mentioned. I do have another question about two other functional Phase 5100 tuners that came in for preventive maintenance and check over. I noticed that when using the up/down scan buttons in FM, both units will scan...
  5. J

    Phase Linear 5100 Digital Tuner

    Hi Ed, Thanks for the assist several months back on the D-500 up in Canada. While we were troubleshooting over the phone, I had the fella check around the relays and he spotted several bad connections at the quick-disconnects on the relays. He cleaned it up and told me it was back to normal...
  6. J

    Phase Linear D-500 Low-Z switch not working.

    Hi to all, I am helping a Phase Linear owner up in Canada troubleshoot his Phase D-500 via email. The unit will not switch into Low-Z via the front panel switch. Earlier, I had the owner take some voltage measurements at pins 11 &12 of the meter board which should be the power source...
  7. J

    Phase Linear amp question

    Hi, I have this posted on the AK website and had a suggestion to bring it here. I’m repairing a Phase Linear D-500 Series II amp. So far, I have replaced all electrolytic capacitors on the driver board, replaced two open diodes (1N4148 and 1N34), replaced the two 15V Zener diodes, and...
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