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Here is the parts list for replacing the electrolytic capacitors on a PL400 Series II PL37 Cyborg boards. Parts from Mouser.

Hi kids, I just finished assembly of a WOPL Control Board Version G for use in a Quasi setup. I thought I'd post a picture to see if anyone spots any issues before I go forward with installation. Thanks in advance for your eagle eyes.

Working on a PL400 (different than the one with the DBt issue) and would like to replace the Q1 and Q2 TIS97 transistors as recommended by the manual to correct high DC offset. Mouser and Digikey both list the TIS97 as obsolete. Although Mouser lists a substitute, the specs for the sub don't...

Hi guys, I thought I'd post a note showing the WOPL 700S2 in operation. The sound recording kinda stinks, I used my phone to record it. However, I am pleased to report the neighbors are enjoying some Led Zeppelin with me, and they don't even need to leave their couch. One thing I do notice...

Hi gang, I'm back. I am just about ready to close up the box on a PL700 S2 that I did a full WOPL on including a WA protection circuit. All voltage and grounding tests have been performed, and the bias set. I just finished a full powerup (outside of the Dim bulb tester), and everything checks...

Hi gang, I'm at it again, this time reworking a PL700 series 2. I'm installing a Watts Abundant Speaker Protection board, however one thing has popped up I could use some clarity on. I sent this question to Don, but I think he is on the road. I also though it might be useful here, as I could...

Hi gang. I thought I should start a thread to consolidate my questions rather than spreading them all over the website. I have a very nice condition 400 series 1 that I am working on. So far I have ordered the Relay output from Watts Abundant, and new Filter capacitors, Bridge rectifier...

My 400 has three different fuse holders.. I searched the site and the net for information on a proper replacement part. I'd like the holders to match and be original if possible. Anybody have a suggestion? I appreciate it.

First, let me introduce myself. I'm older than dirt, and love good equipment. I've done my fair share or recaps on old marantz and Pioneer equipment, and have always wanted a Phase Linear to drive my JBL L-7's. After attempting for several years to pun them with various 100W PC amps, I still was...

Hi, Long time reader, first time poster. I am looking forward to interacting with the good folks on this board. I'll be starting a thread on my recent adventures with an ancient 700 and an abused 400. Hope you all find it interesting, Thanks Richard