UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Television and Video

Notices

Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

Closed Thread
 
Thread Tools
Old 13th Oct 2017, 8:18 pm   #81
matspar
Pentode
 
matspar's Avatar
 
Join Date: Aug 2009
Location: Portsmouth, Hampshire, UK.
Posts: 142
Default Re: And the next one! a GEC BT2147

Robin I'll keep my eyes open for something suitable for you. I may have a couple of fifties sets coming in soon
matspar is offline  
Old 14th Oct 2017, 6:27 am   #82
robin coleman
Hexode
 
Join Date: Oct 2011
Location: Portsmouth, Hampshire, UK.
Posts: 336
Default Re: And the next one! a GEC BT2147

Thank you Matt. Glad Dr John managed to sort it out.

Regards, Robin.
robin coleman is offline  
Old 18th Nov 2017, 8:50 pm   #83
matspar
Pentode
 
matspar's Avatar
 
Join Date: Aug 2009
Location: Portsmouth, Hampshire, UK.
Posts: 142
Default Re: And the next one! a GEC BT2147

A month on and the restoration of the classic Gec BT2147 continues!

I went to visit John W last weekend to talk and play with old tellies, and to collect the newly rebuilt Bakelite bitch.

I'd originally taken the set to John, along with a Pye VT2 to see if he had a suitable frame transformer, which had gone o/c while I was working on it. Once the Pye was working I ended up leaving the GEC with John as by then the time was getting on.
It was ran up on the bench and worked beautifully. John has done a truly fantastic and high class job on the chassis, replacing the o/c frame transformer and rebuilding the pot panel which had been in a dreadful state. Many of the original resistors and most of the caps were also replaced, and with the help of a suitable tuner the GEC was gradually brought back to life!

This was beyond all my expectations and I'll forever be in John (and interlace's) debt for the time and attention that has been lavished on the old bakelite bitch.

I'm very impressed by this set with its flat faced 9" aluminised 6505A crt. The test card looks truly superb, focus and normal broadcast looks equally as impressive. I can't stop watching it! Probably the best 405 line picture I've seen, helped by a really good tube, which was the one saving grace with this one. It was a real wreck 3 months ago.

Yesterday I managed to salvage the original rubber mask. This was in a sorry old state and was a nightmare to separate from the tube face when I first dismantled the set. It was horribly distorted and cracked, almost gooey in places.

I'd resigned myself to the fact that I'd probably end up recreating a new mask of sorts, so with nothing to lose I immersed it in a bowl of boiling water with the plate glass. It softened up considerably and I was able to pull it all back into shape. Most of the original paint washed of in the process and the mask looked dirty, so I carefully cut the glass out with a scalpel to clean it properly. It stayed in one piece so I dried it off and trimmed the rear circular mount which removed a lot of the distortion.

I was then able to lightly rub it down and glue a lot of the cracks together using superglue and activator. I then sprayed it with 3 coats of pale cream acrylic and it came out quite well. Today I have refitted it to the front of the tube. I will attach the implosion screen to the front and carefully tape its edges around the mask to pull it all into square. I (think) it will all look acceptable when it's back in its box.

That will be a job for another day.....

Matt.
---------------------------------------
Attached Thumbnails
Click image for larger version

Name:	DSCF4270.jpg
Views:	88
Size:	84.7 KB
ID:	152471   Click image for larger version

Name:	DSCF4267.jpg
Views:	92
Size:	123.6 KB
ID:	152472   Click image for larger version

Name:	DSCF4276.jpg
Views:	88
Size:	84.2 KB
ID:	152473   Click image for larger version

Name:	DSCF4277.jpg
Views:	89
Size:	75.2 KB
ID:	152474   Click image for larger version

Name:	DSCF4272.jpg
Views:	123
Size:	88.6 KB
ID:	152475  


Last edited by matspar; 18th Nov 2017 at 9:08 pm.
matspar is offline  
Old 18th Nov 2017, 9:17 pm   #84
Heatercathodeshort
Dekatron
 
Heatercathodeshort's Avatar
 
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 6,269
Default Re: And the next one! a GEC BT2147

That mask looks great Matt. Let us hope the luck continues. All the best, John.
Heatercathodeshort is offline  
Old 3rd Dec 2017, 3:00 pm   #85
matspar
Pentode
 
matspar's Avatar
 
Join Date: Aug 2009
Location: Portsmouth, Hampshire, UK.
Posts: 142
Default Re: And the next one! a GEC BT2147

Here she is, finally all back together and looking very smart!

The last part of the rebuild of the Bakelite Bitch involved the refurbishment of the rubber mask and installing the chassis back into the cabinet. It took several attempts to get everything lined up correctly. I had to slacken and rotate the mask quite a few times before it looked level.
I also raised the tube slightly using new felt pads. Then set the scans up and tweaked the picture shift. Got there in the end and I'm very happy with it!!

It hasn't played up yet either, although after about an hour in use the EHT wants to drop off and the picture goes slightly out of focus. This seems to be getting better the more I use the set so I'm thinking LOPT saturation which may go away eventually. Other than that she's a cracker!!!

A huge thankyou to John W for your help with this one! it was well worth all the hassle and headaches!!
Attached Thumbnails
Click image for larger version

Name:	24550157_10155900816569935_329300970_n.jpg
Views:	103
Size:	29.4 KB
ID:	153291   Click image for larger version

Name:	24331075_10155900816249935_410539213_n.jpg
Views:	91
Size:	29.9 KB
ID:	153292   Click image for larger version

Name:	24337460_10155900816649935_242777655_n.jpg
Views:	94
Size:	29.6 KB
ID:	153293   Click image for larger version

Name:	24550190_10155900816264935_1742038153_n.jpg
Views:	93
Size:	28.1 KB
ID:	153294   Click image for larger version

Name:	DSCF4282.jpg
Views:	102
Size:	103.2 KB
ID:	153295  

matspar is offline  
Old 3rd Dec 2017, 6:48 pm   #86
1100 man
Heptode
 
1100 man's Avatar
 
Join Date: Apr 2016
Location: Ventnor, Isle of Wight, & Great Dunmow, Essex, UK.
Posts: 692
Default Re: And the next one! a GEC BT2147

Hi Matt,
What a lovely end result!! That cabinet looks like you have just unboxed it. Every credit to you and John for having the determination to see it through!
Nice collection too. Are you expecting trouble? That looks like a fire extinguisher on the shelf
I hope it will get regular use to watch some vintage programs!
All the best
Nick
1100 man is offline  
Old 3rd Dec 2017, 7:36 pm   #87
matspar
Pentode
 
matspar's Avatar
 
Join Date: Aug 2009
Location: Portsmouth, Hampshire, UK.
Posts: 142
Default Re: And the next one! a GEC BT2147

Thankyou Nick it was worth every minute. Got no projects left now so I'll be suffering from the usual withdrawal symptoms until something interesting comes along.
I always keep that little fire extinguisher to hand! never had to use it but the thought of losing that lot (and that's a small part of it!) fills me with terror!

Matt
matspar is offline  
Old 3rd Dec 2017, 9:49 pm   #88
1100 man
Heptode
 
1100 man's Avatar
 
Join Date: Apr 2016
Location: Ventnor, Isle of Wight, & Great Dunmow, Essex, UK.
Posts: 692
Default Re: And the next one! a GEC BT2147

Hi Matt,
If you're looking for another project, I don't suppose you fancy having a go at the Ekco T310 that is in my 'free to good home' pile?
The cabinet is pretty grim and the CRT has a wire broken off but could be repaired.
I posted it here https://www.vintage-radio.net/forum/...d.php?t=136430 in the wild hope that somebody might want it:- They didn't
When I saw the picture of some of your collection, I thought it might be of interest. I can even bring it to Portsmouth!!
All the best
Nick
1100 man is offline  
Old 4th Dec 2017, 4:26 pm   #89
robin coleman
Hexode
 
Join Date: Oct 2011
Location: Portsmouth, Hampshire, UK.
Posts: 336
Default Re: And the next one! a GEC BT2147

I did not see that one advertised. I am after a set for my first project. I live in Portsmouth.

Regards, Robin.
robin coleman is offline  
Old 4th Dec 2017, 10:07 pm   #90
matspar
Pentode
 
matspar's Avatar
 
Join Date: Aug 2009
Location: Portsmouth, Hampshire, UK.
Posts: 142
Default Re: And the next one! a GEC BT2147

Nick,

Many thanks for such a kind offer. I've got too many similar sets and limited space at the moment so I'll pass on this one. However this could be a good one for Robin to get stuck into. Over to you Robin what do you reckon?

Best regards
Matt
matspar is offline  
Old 4th Dec 2017, 10:50 pm   #91
robin coleman
Hexode
 
Join Date: Oct 2011
Location: Portsmouth, Hampshire, UK.
Posts: 336
Default Re: And the next one! a GEC BT2147

It would be a good start for me Nick.

Regards, Robin.
robin coleman is offline  
Old 4th Dec 2017, 11:52 pm   #92
1100 man
Heptode
 
1100 man's Avatar
 
Join Date: Apr 2016
Location: Ventnor, Isle of Wight, & Great Dunmow, Essex, UK.
Posts: 692
Default Re: And the next one! a GEC BT2147

Robin, I've sent you a PM.
Cheers
Nick
1100 man is offline  
Old 5th Dec 2017, 12:23 am   #93
robin coleman
Hexode
 
Join Date: Oct 2011
Location: Portsmouth, Hampshire, UK.
Posts: 336
Default Re: And the next one! a GEC BT2147

Message received.

Regards, Robin.
robin coleman is offline  
Old 5th Dec 2017, 12:52 am   #94
beery
Heptode
 
beery's Avatar
 
Join Date: Jun 2006
Location: Ware, Hertfordshire, UK.
Posts: 584
Default Re: And the next one! a GEC BT2147

Hi Matt,

I'm glad the GEC turned out ok in the end. The tough ones can be a rignt pain, but then again, more rewarding in the end.
My first TV22 had a lump missing from the front of the case and a duff lopty. I asked Gerry about it and he said it was only good for display. That didn't put me off, but in fact it encouraged me to get into rewinding transformers... It ended up being a very good set, but it took me an age to get there.

Btw, I'm glad to see that the mask was salvaged. The one in my set looked ok for years, but a while back I noticed it was starting to sag. I had been using some turps based cabinet cleaner in the same room and I did wonder if that was what had set it off. I'm not sure how I will tackle it, maybe just turning it upside down will help it?

Cheers
Andy
beery is offline  
Old 5th Dec 2017, 1:29 am   #95
Argus25
Octode
 
Argus25's Avatar
 
Join Date: Oct 2016
Location: Maroochydore, Queensland, Australia.
Posts: 1,625
Default Re: And the next one! a GEC BT2147

Andy,

Do you know if anyone has ever tried to make replica CRT masks for the TV22 ?

The one in my set, like many sets of this vintage, has some deterioration, I strengthened it a little by gluing some strips to the rear of it.
Argus25 is offline  
Old 5th Dec 2017, 3:59 am   #96
Boater Sam
Dekatron
 
Boater Sam's Avatar
 
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,403
Default Re: And the next one! a GEC BT2147

I am surprised that no one has made a mask out of expanding foam and carved it to shape. With the edges filled and painted I think it could work. A crude mould to get the basic outline should suffice.
__________________
Boater Sam.
BVWS Member
Boater Sam is online now  
Old 7th Dec 2017, 5:15 pm   #97
beery
Heptode
 
beery's Avatar
 
Join Date: Jun 2006
Location: Ware, Hertfordshire, UK.
Posts: 584
Default Re: And the next one! a GEC BT2147

Hi Argus25,

Quote:
Originally Posted by Argus25 View Post
Do you know if anyone has ever tried to make replica CRT masks for the TV22 ?
That's a good question, but I feel I should start a new thread on that topic.

Cheers
Andy
beery is offline  
Old 8th Dec 2017, 3:28 pm   #98
FERNSEH
Dekatron
 
FERNSEH's Avatar
 
Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 5,178
Default Re: And the next one! a GEC BT2147

Originally Posted by Argus25
"Do you know if anyone has ever tried to make replica CRT masks for the TV22 ?
That's a good question, but I feel I should start a new thread on that topic"


And make a sticky.

DFWB.
FERNSEH is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 5:58 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright ©2002 - 2018, Paul Stenning.