Hey all,
I recently rebuilt some KEF 103|4's. Talking to a friend about it and my desire for a power amplifier to match, he mentioned he had a Parasound 2125 v2 that wasn't working he would give my. It powers on to protect without the L side lit.
I've been going over and over and over it. No schematic (for V2), certainly no service manual. I narrowed it to L speaker channel B, I believe. I found some bad transitors and zener diodes. I replaced what I found, and got to the point where I was getting the same values as channel A. I thought it might work, but when powered on it blew, last output transistor was smoking before I knew it. Fried the new irf540's I put in and I don't even know what else, I put it aside.
I only need one channel. I don't know if I can nerf channel B somehow. Anybody know anything about that?
I could try and make this work, or I could scavenge some parts to help build a Honey Badger, or perhaps Wolverine if the boards are available. I've got this nice big toroidal PSU, specifically.
I'm between three choices: Continue to try and make the Parasound work, find a decent old pa like an Adcom GFA-555, or build my own.
I do really enjoy DIY stuff. I would love to roll my own. But if I can nerf chan B easily, that would be fine. And older Adcom or similar may wind up needing recap anyway, on top of already being probably more expensive than DIY.
What would y'all do?
I recently rebuilt some KEF 103|4's. Talking to a friend about it and my desire for a power amplifier to match, he mentioned he had a Parasound 2125 v2 that wasn't working he would give my. It powers on to protect without the L side lit.
I've been going over and over and over it. No schematic (for V2), certainly no service manual. I narrowed it to L speaker channel B, I believe. I found some bad transitors and zener diodes. I replaced what I found, and got to the point where I was getting the same values as channel A. I thought it might work, but when powered on it blew, last output transistor was smoking before I knew it. Fried the new irf540's I put in and I don't even know what else, I put it aside.
I only need one channel. I don't know if I can nerf channel B somehow. Anybody know anything about that?
I could try and make this work, or I could scavenge some parts to help build a Honey Badger, or perhaps Wolverine if the boards are available. I've got this nice big toroidal PSU, specifically.
I'm between three choices: Continue to try and make the Parasound work, find a decent old pa like an Adcom GFA-555, or build my own.
I do really enjoy DIY stuff. I would love to roll my own. But if I can nerf chan B easily, that would be fine. And older Adcom or similar may wind up needing recap anyway, on top of already being probably more expensive than DIY.
What would y'all do?