Push Pull tube amp kit from China

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

Push Pull tube amp kit from China

TV MAN
Phorum Expert

Posts: 1,204
Threads: 84
Joined: Jan 2014
City: Annapolis, IL State, Province, Country: USA

#20

03-11-2022, 03:24 PM

I think I found it! I reversed the output transformer ground and feedback and it eliminated the ocsillation and also eliminated the hum and hiss. It "appears" the ground and 8 ohm wires on the output transformer are connected backwards inside the transformer or the plate leads are reversed. So I'll reverse those permanently and do further testing. With the feedback disconnected the gain and distortion are a lot more along with other noise.

If I could find the place called "Somewhere", I could find "Anything" Icon_confused

Tim

Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44

Find

« Next Oldest | Next Newest »

Messages In This Thread

Push Pull tube amp kit from China - by TV MAN - 02-03-2022, 10:03 PM

RE: Push Pull tube amp kit from China - by TV MAN - 02-03-2022, 10:18 PM

RE: Push Pull tube amp kit from China - by TV MAN - 02-05-2022, 12:13 PM

RE: Push Pull tube amp kit from China - by Ron Ramirez - 02-05-2022, 12:39 PM

RE: Push Pull tube amp kit from China - by John Bartley - 02-05-2022, 03:36 PM

RE: Push Pull tube amp kit from China - by morzh - 02-05-2022, 05:27 PM

RE: Push Pull tube amp kit from China - by radiorich - 02-05-2022, 05:46 PM

RE: Push Pull tube amp kit from China - by TV MAN - 02-07-2022, 03:20 PM

RE: Push Pull tube amp kit from China - by Mondial - 02-07-2022, 03:44 PM

RE: Push Pull tube amp kit from China - by morzh - 02-13-2022, 08:23 PM

RE: Push Pull tube amp kit from China - by TV MAN - 03-02-2022, 01:04 PM

RE: Push Pull tube amp kit from China - by radiorich - 03-03-2022, 09:02 AM

RE: Push Pull tube amp kit from China - by Steve D - 03-03-2022, 05:32 PM

RE: Push Pull tube amp kit from China - by EdHolland - 03-04-2022, 02:39 PM

RE: Push Pull tube amp kit from China - by morzh - 03-04-2022, 08:34 PM

RE: Push Pull tube amp kit from China - by TV MAN - 03-09-2022, 10:21 AM

RE: Push Pull tube amp kit from China - by TV MAN - 03-10-2022, 12:40 PM

RE: Push Pull tube amp kit from China - by radiorich - 03-10-2022, 10:02 PM

RE: Push Pull tube amp kit from China - by TV MAN - 03-11-2022, 02:18 PM

RE: Push Pull tube amp kit from China - by TV MAN - 03-11-2022, 03:24 PM

RE: Push Pull tube amp kit from China - by TV MAN - 03-13-2022, 11:31 PM

RE: Push Pull tube amp kit from China - by Mondial - 03-14-2022, 12:36 AM

RE: Push Pull tube amp kit from China - by radiorich - 03-14-2022, 08:13 AM

RE: Push Pull tube amp kit from China - by TV MAN - 03-14-2022, 01:53 PM

RE: Push Pull tube amp kit from China - by Mondial - 03-14-2022, 02:18 PM

RE: Push Pull tube amp kit from China - by TV MAN - 03-22-2022, 08:55 AM

RE: Push Pull tube amp kit from China - by Mondial - 03-22-2022, 09:31 AM

RE: Push Pull tube amp kit from China - by TV MAN - 03-22-2022, 11:25 PM

RE: Push Pull tube amp kit from China - by radiorich - 03-23-2022, 01:05 AM

RE: Push Pull tube amp kit from China - by TV MAN - 03-23-2022, 11:35 PM

RE: Push Pull tube amp kit from China - by radiorich - 03-24-2022, 12:29 AM

RE: Push Pull tube amp kit from China - by TV MAN - 01-08-2025, 04:29 PM

RE: Push Pull tube amp kit from China - by morzh - 01-08-2025, 06:36 PM

RE: Push Pull tube amp kit from China - by TV MAN - 01-08-2025, 07:56 PM

RE: Push Pull tube amp kit from China - by radiorich - 01-08-2025, 11:00 PM

RE: Push Pull tube amp kit from China - by MrFixr55 - 01-09-2025, 08:51 AM

RE: Push Pull tube amp kit from China - by TV MAN - 01-09-2025, 03:27 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM

Who's Online

There are currently 2344 online users. [Complete List]
» 1 Member(s) | 2343 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me