Search found 9 matches

by chuckrock
Tue Jun 12, 2012 4:01 pm
Forum: Technical Discussion
Topic: Sovtek 5Y3 vs. JJ
Replies: 5
Views: 2559

Sovtek 5Y3 vs. JJ

It seems like for the past year just about every other Sovtek 5Y3 I've purchased has either been defective or has had some kind of noise issue. I saw that JJ recently released a 5Y3, and was wondering if any of you guys had an opinion on it? Since it appears that JJ & Sovtek are the only companies c...
by chuckrock
Mon May 07, 2012 8:34 pm
Forum: Technical Discussion
Topic: Ampeg V4 Burnt Resistors
Replies: 7
Views: 2473

Re: Ampeg V4 Burnt Resistors

Thanks for the advice firestorm. I'll leave the diodes hooked up as they are. The amp sounds great now!!
by chuckrock
Sun May 06, 2012 3:50 am
Forum: Technical Discussion
Topic: Ampeg V4 Burnt Resistors
Replies: 7
Views: 2473

Re: Ampeg V4 Burnt Resistors

FIXED!!! Thanks Firestorm & selloutrr, you were right. Since that cap had been replaced, I just assumed that they were not the issue. The PS cap on stage D had shorted, thus the PI was not getting any voltage. Changed out that cap, and my amp is alive again!!! Thanks!
by chuckrock
Sat May 05, 2012 11:49 pm
Forum: Technical Discussion
Topic: Ampeg V4 Burnt Resistors
Replies: 7
Views: 2473

Re: Ampeg V4 Burnt Resistors

Something interesting that I just noticed. The V4 I'm working on is an earlier model that follows this schematic: http://www.ampegv4.com/images/schematics/V4.jpg This model does not have the series diodes coming off the OT plate windings like the later version: http://www.freeinfosociety.com/electro...
by chuckrock
Fri May 04, 2012 7:42 pm
Forum: Technical Discussion
Topic: Ampeg V4 Burnt Resistors
Replies: 7
Views: 2473

Re: Ampeg V4 Burnt Resistors

Thanks for the advice guys. C17 has been replaced by a previous tech. The other PS stages are original though, and should probably be replaced as well. R51 is not heating up like R52 & R53. This amp was definitely worked on previously, and I must admit that it's a bit of a rats nest. Not to mention ...
by chuckrock
Fri May 04, 2012 5:26 pm
Forum: Technical Discussion
Topic: Ampeg V4 Burnt Resistors
Replies: 7
Views: 2473

Ampeg V4 Burnt Resistors

Hey Guys, I have an early model V4. Recently in the middle of practice the amp experienced loss of output. I removed the chassis from the cabinet, took a look at the main board, and saw that R52 & R53 appeared burnt. I replaced both of these resistors (correct value & wattage), but this still didn't...
by chuckrock
Wed Dec 07, 2011 4:01 pm
Forum: Trainwreck Discussion
Topic: Triode Electronics TW Express Kit
Replies: 26
Views: 10759

Re: Triode Electronics TW Express Kit

Thanks for the encouragement and the words words of wisdom! This forum is truly amazing! I think I'm going to attempt the build. No offence to RJ, as I'm sure his customer service is outstanding, but the guys at triode helped me through my 5E3 build, so I feel that I should show some loyalty. The pa...
by chuckrock
Tue Dec 06, 2011 11:50 pm
Forum: Trainwreck Discussion
Topic: Triode Electronics TW Express Kit
Replies: 26
Views: 10759

Re: Triode Electronics TW Express Kit

Awesome thanks! I assume you've built an Express before? How hard do you think it would be? I have some experience, and know enough not to hurt myself, but I don't want to get in over my head.
by chuckrock
Tue Dec 06, 2011 11:43 pm
Forum: Trainwreck Discussion
Topic: Triode Electronics TW Express Kit
Replies: 26
Views: 10759

Triode Electronics TW Express Kit

Hey Guys, I'm fairly new to this forum, but joined in hopes of leaning more about Trainwreck amps since I want to build one in the near future. I see that triode electronics is now offering a TW express kit, do any of you have experience with this kit? http://www.triodeelectronics.com/twtubeampkit.h...