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1971 GEC 2103: 2040 Series Chassis

 
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1971 GEC 2103: 2040 Series Chassis

Post by Doz » Thu Mar 03, 2016 4:31 pm

Just had a call from a friend, who's just moved into an old house...

"Would you like this? Been left in the loft..."

12776798_10154604230346002_6978781_o.jpg


Oh yes!

C2115 I think, single standard hybrid, 2040 chassis. I haven't seen it in the flesh yet, collecting it Monday.
Last edited by crustytv on Sat Mar 12, 2016 6:04 pm, edited 1 time in total.
Reason: Amended thread title to fully document. This helps when other search via the site or google.

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by crustytv » Thu Mar 03, 2016 4:42 pm

What a stroke of luck, and it does indeed look like a 2115. See here near the bottom http://www.radios-tv.co.uk/gec/

You will be interested to know yesterday I added a load more sets to the stock faults section and one of them was the 2040 chassis

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by colourmaster » Thu Mar 03, 2016 5:16 pm

Hi
That's a great find , the model is 2103 being the 19" version . The 2115 20" came a year later .
I'll follow this with interest.
Regards.
Gary.

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Tazman1966 » Thu Mar 03, 2016 5:47 pm

A great find indeed! Very nice performers especially if the CRT is good. I had the 20" C2115 version and it was a cracker. I swapped it for a 22" version - the model number escapes me at the moment - and that too is lovely.

Good luck with it.

Tas

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Thu Mar 03, 2016 8:27 pm

405 fan wrote:Hi
That's a great find , the model is 2103 being the 19" version . The 2115 20" came a year later .
I'll follow this with interest.
Regards.
Gary.


Thanks Gary, I thought it looked a little round in the tube face to be a 20", didn't realise they did a 19".

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Focus 2 » Thu Mar 03, 2016 9:47 pm

This could well be an early version with a solid state boost diode. Later models reverted to a PY500 in this position.
Looking forward to hearing how you get on. Brilliant sets.
Brian

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by colourmaster » Fri Mar 11, 2016 9:07 pm

Hi Doz
I was just wondering if you've collected your set yet ?.
I'm looking forward to your thread.
Regards.
Gary.

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Fri Mar 11, 2016 10:00 pm

It got a bit delayed, but I collected it this morning. Next up... after a drop of vino, and a watch of something suitable on the Pye!

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by colourmaster » Fri Mar 11, 2016 10:30 pm

Hi Doz
That's great news , I look forward to your restoration.
There doesn't seem to be many GEC colour sets in our community .
Regards. Gary.

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 12:50 pm

It's on the bench!

Initial findings:
It's filthy!
setweb.jpg

.. but complete...
chassis1.jpg

... and largely unmolested...
chassis2.jpg

... some "interesting" insulation tape around the on/off switch...
on off.jpg

... the tube's either flat or still asleep (i'll let it run for a while)...
tube.jpg

... there's been some arcing from the anode connection on the PL509....
line out1.jpg

... and there's a resistor on the lopt that cracked in half as soon as I touched it...
lineout2.jpg


I'll go and see if there's any data in the library, replace that wire & resistor, and up with the mains!

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by crustytv » Sat Mar 12, 2016 12:56 pm

Hi Andy,

Is there a model number stamped on the chassis? I can then go find the data and scan it for you. The chassis looks totally different to the 2110 series.

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by colourmaster » Sat Mar 12, 2016 1:02 pm

Hi
It should be a 2103 .
Regards.
Gary

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by crustytv » Sat Mar 12, 2016 1:03 pm

OK not to worry I found it, the 2040 chassis, I'm scanning as I type, it will be in the library in 30 mins.

2040.jpg

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 1:04 pm

That's the badger! Thanks Chris!

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by colourmaster » Sat Mar 12, 2016 1:30 pm

Hi Doz
The burning of the line output leads was very common , infact the later versions had a piece of card in between the two leads to insulate them.
The arcing of the lead is probably why your set was pensioned off to the loft .
Regards .
Gary

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Focus 2 » Sat Mar 12, 2016 1:31 pm

Very nice. Looking forward to hear how you get on.
Cheers
Brian

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 1:33 pm

SOD it at it's finest!

My burned out resistor is R55, it's 1.5K in the anode circuit of the PL509. With the arcing going on where the lead passed through the grommet in the heat sheild, it's unsurprising it's failed. Could this be what stopped the fun all those years ago?

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by crustytv » Sat Mar 12, 2016 1:52 pm

Hi Andy,

The service data as it looks like you've already discovered, is in the data library.

Don't forget there are also stock faults for CTV's available, you'll be happy to know the 2040 chassis is available and runs to 25 pages! http://www.radios-tv.co.uk/gec-2040-series/

A timely reminder for subscribers to the data library, remember the slogan "If you don't see it S.O.D.IT!"

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 5:14 pm

Mains fuse was open, replaced and the set is gently getting woken up via the variac. Up to 100V, nothing yet!

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 6:05 pm

Ladies and gentlemen... first light!

first light.jpg

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by crustytv » Sat Mar 12, 2016 6:07 pm

Well the green gun looks ok :qq1

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 6:20 pm

After a few more minutes things improve, a quick sweep up the band with the modulator (there's not chance of tuning the set, it's seized up solid!) ....

rugby.jpg


Green as grass, but nice and sharp. Full of convergence errors, a stinking hum bar, and no colour, although winding the colour control flat out produces flashes of blue every now and again.

I've going to strip and sort the tuner first.

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 9:46 pm

Tuner stripped, cleaned unseized and lubricated.

C423 exploded on the CDA. :aac I'm sure C409 wasn't far behind it, so the CDA panel came out for a good clean and check over, and some replacement caps. Both are 4uF 350V. I've fitted 4.7u 450V, because that's what I've got! C423 decouples the screen supply for the CDA amplifiers (pentode section of the PCL804's) , C409 decouples the screen for the PL802.

Grey scale seems to be much more stable now, it did have a tendency to drift about..

Interestingly the hum bar seems to have gone now, despite effecting the frame more than everything else.

I've also changed the cathode bypass on the PL508 frame output valve, which has sorted the linearity.

That curtails play for today. More tomorrow. Bring on the decoder! :aad

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by crustytv » Sat Mar 12, 2016 9:54 pm

Doz wrote:That curtails play for today. More tomorrow. Bring on the decoder! :aad

You're as perverse as me, I too get a twisted sort of pleasure out of decoder wars. :aah

 
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Re: 1971 GEC 2103: 2040 Series Chassis

Post by Doz » Sat Mar 12, 2016 10:51 pm

CrustyTV wrote:
Doz wrote:That curtails play for today. More tomorrow. Bring on the decoder! :aad

You're as perverse as me, I too get a twisted sort of pleasure out of decoder wars. :aah


I'm not relishing the thought of the double sided print much though...

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