Ferguson videostar 3v32 drum speed problem. - Page 3 - UK Vintage Radio Repair and Restoration Discussion Forum

tony brady · 31st Oct 2019, 11:21 am

is it the same with a tape recorded on another machine?

Snarf81 · 31st Oct 2019, 11:32 am

Hi, yes it is. Recordings made on this and played back on another vcr are fine with no white lines at all. All tapes played on this vcr have the lines.

Cheers
Richard.

tony brady · 31st Oct 2019, 11:38 am

can you take a picture of the area from the drum to the pre amp board behind it Richard? it's been many years since I looked at one ( mine!) but I might spot something

cheers
Tony

dj_fivos_sak · 31st Oct 2019, 11:52 am

Richard

Well done at solving the drum speed issue. A little odd that the connector had failed. As for these white flashes, it looks like a grounding issue. Have you made sure the drum is grounded properly? There should be a springy grounding clip at the top of the drum and it sometimes gets oxidized.

Fivos

Snarf81 · 31st Oct 2019, 7:11 pm

Thanks Fivos.
I've cleaned the earthing clip and the cap, not much dirt came off it.

Tony,
I've attached pictures of the drum area.

Cheers
Richard.

tony brady · 31st Oct 2019, 8:33 pm

Hi Richard

it all looks good, nothing missing. have you tried the earth strip from your scrap set on it? worth a try I think

cheers
Tony

Snarf81 · 31st Oct 2019, 8:50 pm

Hi Tony,
I have tried it, and the pre amp too but with no success unfortunately.

Could the power supply board cause it by any chance? I noticed a burning smell, a little blueish flash and a fuse blown, caused by my stupidity when taking the power supply board out to inspect it for dry joints etc, I connected one 3 pin connector to the wrong lead. I replaced the blown fuse, but it still worked. D'oh!!!

Red to black · 31st Oct 2019, 8:53 pm

Found this C/O the TV mag.

Quote:

#6 Ferguson 3V31/32

The problem with this machine was persistent white horizontal flecks
in the playback mode - a new head didn't make any difference. The
cause of the trouble was the video head rotary transformer's windings,
which become loose in their channels. You can glue the loose windings
back, but make sure that no glue sits proud as this will result in
the drum motor binding.
This action cures the fault with no need to replace the expensive
drum motor! The JVC equivalents are Models HR7650 and HR7655. C.D.N

Worth a look, although I have never actually seen this problem with any of these machines myself.

Snarf81 · 31st Oct 2019, 8:55 pm

Ah, thanks for this! I did actually check them whilst I had the drum out the other day, they were fine.

Thanks
Richard.

Red to black · 31st Oct 2019, 9:04 pm

Did you check both halves of the rotary transformer ?
I believe Vauxfan ^^^ had a similar problem with a different Fergy machine a while back, but as I say I have never seen the rotary transformer winding problem on any Fergy VS machine myself.

Edit: thread on Vauxfans problem here: https://www.vintage-radio.net/forum/...d.php?t=155260

Snarf81 · 31st Oct 2019, 9:14 pm

Hi Red,
I did check both as I'd had the loose winding problem with one of my Sanyo betamax vcrs in the past so I always check now after that. Thanks for the suggestion though

Richard.

Red to black · 31st Oct 2019, 9:25 pm

No probs, it wasn't my fault report

I added the link to Vauxfans problem in my previous post.

A suggestion of mine is to try a temporary 'hard' ground connection with a piece of wire from the psu ground direct to the deck/head amp can/head Earthing brush, to see if you have a "grounding" problem elsewhere

it has been known on other machines.

Snarf81 · 31st Oct 2019, 9:29 pm

Ah, I'd never thought of that. Good suggestion. I shall do that tomorrow as I've given up fiddling with vcrs for today, tomorrow I'm taking delivery of a Philips N1500 VCR so I'll be in the mood to take the lid off this Ferguson yet again. Haha.

Thanks again
Richard.

tony brady · 31st Oct 2019, 9:39 pm

good luck with it Richard. I don't think the power supply is the problem as it looks a bit too good but it may be worth checking the voltages going into the pre amp

Red to black · 31st Oct 2019, 9:52 pm

It looks like the classic 'static build up' problem to me, I have had a faulty earthing brush before today and I could not find anything wrong with it either.
A short thick piece of wire soldered to the secondary PSU chassis/0V line temporarily connected to various points one at a time in the order as I posted above eventually found the culprit though.

Another instance was the deck earthing on a Toshiba machine (which Tosh later made a mod kit available for) was found by pretty much the same method.
Whilst this may not fix Richards problem it is quick, easy to do and costs nothing to try and may well rule some things in or out as the case may be, be interested to see what transpires all the same.

31st Oct 2019, 11:21 am	#41
tony brady Hexode Join Date: Mar 2014 Location: Peacehaven, East Sussex, UK. Posts: 278	Re: Ferguson videostar 3v32 drum speed problem. is it the same with a tape recorded on another machine?

31st Oct 2019, 11:32 am	#42
Snarf81 Heptode Join Date: Aug 2018 Location: Rogiet, Monmouthshire, Wales, UK. Posts: 615	Re: Ferguson videostar 3v32 drum speed problem. Hi, yes it is. Recordings made on this and played back on another vcr are fine with no white lines at all. All tapes played on this vcr have the lines. Cheers Richard.

31st Oct 2019, 11:38 am	#43
tony brady Hexode Join Date: Mar 2014 Location: Peacehaven, East Sussex, UK. Posts: 278	Re: Ferguson videostar 3v32 drum speed problem. can you take a picture of the area from the drum to the pre amp board behind it Richard? it's been many years since I looked at one ( mine!) but I might spot something cheers Tony

31st Oct 2019, 11:52 am	#44
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: Ferguson videostar 3v32 drum speed problem. Richard Well done at solving the drum speed issue. A little odd that the connector had failed. As for these white flashes, it looks like a grounding issue. Have you made sure the drum is grounded properly? There should be a springy grounding clip at the top of the drum and it sometimes gets oxidized. Fivos

31st Oct 2019, 7:11 pm	#45
Snarf81 Heptode Join Date: Aug 2018 Location: Rogiet, Monmouthshire, Wales, UK. Posts: 615	Re: Ferguson videostar 3v32 drum speed problem. Thanks Fivos. I've cleaned the earthing clip and the cap, not much dirt came off it. Tony, I've attached pictures of the drum area. Cheers Richard. Attached Thumbnails

31st Oct 2019, 8:33 pm	#46
tony brady Hexode Join Date: Mar 2014 Location: Peacehaven, East Sussex, UK. Posts: 278	Re: Ferguson videostar 3v32 drum speed problem. Hi Richard it all looks good, nothing missing. have you tried the earth strip from your scrap set on it? worth a try I think cheers Tony

31st Oct 2019, 8:50 pm	#47
Snarf81 Heptode Join Date: Aug 2018 Location: Rogiet, Monmouthshire, Wales, UK. Posts: 615	Re: Ferguson videostar 3v32 drum speed problem. Hi Tony, I have tried it, and the pre amp too but with no success unfortunately. Could the power supply board cause it by any chance? I noticed a burning smell, a little blueish flash and a fuse blown, caused by my stupidity when taking the power supply board out to inspect it for dry joints etc, I connected one 3 pin connector to the wrong lead. I replaced the blown fuse, but it still worked. D'oh!!! Last edited by Snarf81; 31st Oct 2019 at 8:51 pm. Reason: Corrected a spelling mistake.

31st Oct 2019, 8:55 pm	#49
Snarf81 Heptode Join Date: Aug 2018 Location: Rogiet, Monmouthshire, Wales, UK. Posts: 615	Re: Ferguson videostar 3v32 drum speed problem. Ah, thanks for this! I did actually check them whilst I had the drum out the other day, they were fine. Thanks Richard.

31st Oct 2019, 9:04 pm	#50
Red to black Nonode Join Date: Mar 2010 Location: Sunderland, Tyne and Wear, UK. Posts: 2,476	Re: Ferguson videostar 3v32 drum speed problem. Did you check both halves of the rotary transformer ? I believe Vauxfan ^^^ had a similar problem with a different Fergy machine a while back, but as I say I have never seen the rotary transformer winding problem on any Fergy VS machine myself. Edit: thread on Vauxfans problem here: https://www.vintage-radio.net/forum/...d.php?t=155260 __________________ I don't suffer from Insanity. I enjoy every minute of it. Last edited by Red to black; 31st Oct 2019 at 9:15 pm. Reason: Link to thread added

31st Oct 2019, 9:14 pm	#51
Snarf81 Heptode Join Date: Aug 2018 Location: Rogiet, Monmouthshire, Wales, UK. Posts: 615	Re: Ferguson videostar 3v32 drum speed problem. Hi Red, I did check both as I'd had the loose winding problem with one of my Sanyo betamax vcrs in the past so I always check now after that. Thanks for the suggestion though Richard.

31st Oct 2019, 9:25 pm	#52
Red to black Nonode Join Date: Mar 2010 Location: Sunderland, Tyne and Wear, UK. Posts: 2,476	Re: Ferguson videostar 3v32 drum speed problem. No probs, it wasn't my fault report I added the link to Vauxfans problem in my previous post. A suggestion of mine is to try a temporary 'hard' ground connection with a piece of wire from the psu ground direct to the deck/head amp can/head Earthing brush, to see if you have a "grounding" problem elsewhere it has been known on other machines. __________________ I don't suffer from Insanity. I enjoy every minute of it.

31st Oct 2019, 9:29 pm	#53
Snarf81 Heptode Join Date: Aug 2018 Location: Rogiet, Monmouthshire, Wales, UK. Posts: 615	Re: Ferguson videostar 3v32 drum speed problem. Ah, I'd never thought of that. Good suggestion. I shall do that tomorrow as I've given up fiddling with vcrs for today, tomorrow I'm taking delivery of a Philips N1500 VCR so I'll be in the mood to take the lid off this Ferguson yet again. Haha. Thanks again Richard.

31st Oct 2019, 9:39 pm	#54
tony brady Hexode Join Date: Mar 2014 Location: Peacehaven, East Sussex, UK. Posts: 278	Re: Ferguson videostar 3v32 drum speed problem. good luck with it Richard. I don't think the power supply is the problem as it looks a bit too good but it may be worth checking the voltages going into the pre amp

31st Oct 2019, 9:52 pm	#55
Red to black Nonode Join Date: Mar 2010 Location: Sunderland, Tyne and Wear, UK. Posts: 2,476	Re: Ferguson videostar 3v32 drum speed problem. It looks like the classic 'static build up' problem to me, I have had a faulty earthing brush before today and I could not find anything wrong with it either. A short thick piece of wire soldered to the secondary PSU chassis/0V line temporarily connected to various points one at a time in the order as I posted above eventually found the culprit though. Another instance was the deck earthing on a Toshiba machine (which Tosh later made a mod kit available for) was found by pretty much the same method. Whilst this may not fix Richards problem it is quick, easy to do and costs nothing to try and may well rule some things in or out as the case may be, be interested to see what transpires all the same. __________________ I don't suffer from Insanity. I enjoy every minute of it.