Repair a pre

Discuss and chat about all things Conrad Johnson.
Post Reply
Alvaro
Beginner
Beginner
Posts: 3
Joined: Sat Jun 24, 2017 11:22 am
Location: Brazil

Repair a pre

Post by Alvaro »

Hello everyone. I am a technician in electronics and I received for repair a preamp CJ that unfortunately has been repaired before by people not qualified for this. I could not identify the model but it has 9 double triodes and a 12x4 rectifier. Could someone please help me with the scheme?
I live in Brazil. :)
User avatar
admin
Site Admin
Site Admin
Posts: 4565
Joined: Tue Jan 03, 2012 1:50 pm
Location: New Hampshire, USA
Contact:

Re: Repair a pre

Post by admin »

Could you post some pictures of the front, back, and inside. We can probably help identify it with some pictures. We have a lot of schematics in our database so once we identify the model, you can probably download the schematic to help you troubleshoot any problems.
-admin
Home Theater in Member Gallery
Main stereo: ART Amplifier and ET7s2. 2nd stereo: PV-14L and MV-55. Previously Owned: PF2 preamp, Evolution 2000 Amp, PV-12AL preamp, D/A-2b Vacuum-Tube Digital Processor.
Alvaro
Beginner
Beginner
Posts: 3
Joined: Sat Jun 24, 2017 11:22 am
Location: Brazil

Re: Repair a pre

Post by Alvaro »

I'm going to take pictures.
Alvaro
Beginner
Beginner
Posts: 3
Joined: Sat Jun 24, 2017 11:22 am
Location: Brazil

Re: Repair a pre

Post by Alvaro »

I was able to identify Premier Two!
User avatar
admin
Site Admin
Site Admin
Posts: 4565
Joined: Tue Jan 03, 2012 1:50 pm
Location: New Hampshire, USA
Contact:

Re: Repair a pre

Post by admin »

Great. You can find the schematics here: viewtopic.php?f=17&t=128
-admin
Home Theater in Member Gallery
Main stereo: ART Amplifier and ET7s2. 2nd stereo: PV-14L and MV-55. Previously Owned: PF2 preamp, Evolution 2000 Amp, PV-12AL preamp, D/A-2b Vacuum-Tube Digital Processor.
Post Reply