Videokarma.org TV - Video - Vintage Television & Radio Forums

Videokarma.org TV - Video - Vintage Television & Radio Forums (http://www.videokarma.org/index.php)
-   Early B&W and Projection TV (http://www.videokarma.org/forumdisplay.php?f=19)
-   -   Back to the VT-71H (http://www.videokarma.org/showthread.php?t=275617)

Chris K 04-29-2023 02:37 PM

Hi Tim. The “cherry drops” capacitors in there are pretty cheap, Chinese knockoffs I got in a multi-pack kit off Amazon. I tested them before I soldered them in and they were in spec and not leaky but I’m wondering if changing them out would help. The Wima high voltage caps are the standard replacement caps for that area and should be ok. Then there’s the pesky resonance spring around the HV rectifier Bob messed with a video or two ago. I believe it is in the correct place but I’m suggesting whatever I can to help out!

timmy 04-29-2023 03:37 PM

Quote:

Originally Posted by Chris K (Post 3250599)
Hi Tim. The “cherry drops” capacitors in there are pretty cheap, Chinese knockoffs I got in a multi-pack kit off Amazon. I tested them before I soldered them in and they were in spec and not leaky but I’m wondering if changing them out would help. The Wima high voltage caps are the standard replacement caps for that area and should be ok. Then there’s the pesky resonance spring around the HV rectifier Bob messed with a video or two ago. I believe it is in the correct place but I’m suggesting whatever I can to help out!

Hey Chris the hv spring is good because the hv is at 6 kv I also checked the hv caps they look good I’m coming away from thinking they might be a problem. I sent you an email give me a ring when you have time.

timmy 04-30-2023 07:02 AM

The hv I lowered to 5kv max is 6kv and 3kv is recommended so it’s at the happy medium.

timmy 04-30-2023 07:53 AM

Does anyone have an idea if this ts-4h has channel 1 or is it just 3-4

timmy 04-30-2023 10:52 AM

Hey Chris I’m done with this moto I have had it playing for about an hour with no issues and I’m probably going to let it play for another hour. And Chris the nut on top of the hv cage now has a period correct nut, LOL.

Chris K 04-30-2023 11:19 AM

Quote:

Originally Posted by timmy (Post 3250614)
Hey Chris I’m done with this moto I have had it playing for about an hour with no issues and I’m probably going to let it play for another hour. And Chris the nut on top of the hv cage now has a period correct nut, LOL.

Thanks so much Tim! I bet you’re done with it! I can post video of it running once I have it back. Check your PayPal for my thanks and gratitude for your lengthy efforts!

bandersen 04-30-2023 12:48 PM

Quote:

Originally Posted by timmy (Post 3250611)
Does anyone have an idea if this ts-4h has channel 1 or is it just 3-4

2-3
4
5
6
7
8-9
10-11
12-13

So what was the final fix?

timmy 04-30-2023 01:25 PM

Quote:

Originally Posted by bandersen (Post 3250620)
2-3
4
5
6
7
8-9
10-11
12-13

So what was the final fix?

Oh there was lots to be done lots of soldering bad connections I literally went over everything. The final was the vertical size 2 4.7 meg resistors at 6sl7 were new but the actual solder never made a connection it looked ok but it wasn’t and other numerous resistors. L39 was open that’s why there was no video.

Chris K 04-30-2023 02:08 PM

Quote:

Originally Posted by timmy (Post 3250623)
Oh there was lots to be done lots of soldering bad connections I literally went over everything. The final was the vertical size 2 4.7 meg resistors at 6sl7 were new but the actual solder never made a connection it looked ok but it wasn’t and other numerous resistors.

I’m so ashamed😩😩😩😩😩

timmy 04-30-2023 02:22 PM

Quote:

Originally Posted by Chris K (Post 3250624)
I’m so ashamed😩😩😩😩😩

Lol stop no shame here what’s the big deal after all you said someone else was in there no big deal we all run into odd stuff 😂 Chris I sent you an email.

timmy 05-01-2023 10:20 AM

Quote:

Originally Posted by Chris K (Post 3250617)
Thanks so much Tim! I bet you’re done with it! I can post video of it running once I have it back. Check your PayPal for my thanks and gratitude for your lengthy efforts!

Well it got to me in less then 2 days you should get it maybe Tuesday definitely Wednesday and looking forward to seeing the video set up and working.


All times are GMT -5. The time now is 10:40 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.