BRC 2000 restoration. - Page 5 - UK Vintage Radio Repair and Restoration Discussion Forum

Mikey405 · 11th Nov 2013, 11:19 am

Quote:

Originally Posted by MALC SCOTT

Hi, i am still looking for a chroma pcb for my 2000. The one which is fitted has had all of the silicon replaced and all electrolytics. It is difficult to work on this pcb in situ. I also need a focus control. Cheers, Malc.

Hi Malc.

Although I'm not any kind of expert, I do enjoy looking at decoders and I'm happy to have a look at your PAL decoder if you can get it sent down to me. They're of a fairly standard design and usually quite reliable - No "stock" faults that I can think of. Have you tried a decoder out of another 2000 to make sure the lack of colour is definitely due to this panel?

Thanks Malc.

Kind regards.

From Mike.

MALC SCOTT · 11th Nov 2013, 11:40 am

Hi Mike, i dont have another decoder pcb to try but i am certain that it is faulty. I have replaced all of the silicon, a lot of out of spec resistors and all electrolytics. Also a new xtal. The main problem is trying to fault find, the size of this set is huge. If all else fails i will take up your very kind offer to repair the decoder. After a few days running, the crt is now brilliant and tests perfect on my BK467 tester, Malc.

Welsh Anorak · 11th Nov 2013, 2:47 pm

Hi Malc
The decoders are on their way to you, but I think you might end up having more fun with them than with yours! Still, they will give you a source of spares if nothing else.
Glyn

MALC SCOTT · 11th Nov 2013, 4:03 pm

Thank you

slidertogrid · 22nd Feb 2015, 10:08 pm

Quote:

Originally Posted by Arnold69

My EHT regulation had gone - picture ballooning with brightness. I got a EHT probe and measured 15 to 28kV! Fixed that first, suggest this is one of the first checks. Arnold69

Hi I have a 25" 2000 which I am working my way around, on my set the picture size varies with brightness and tends to fluctuate around on it's own accord, even on a still picture. Could you tell me what the cause was on your set please? I am keen to solve this fault before any damage is caused.
many thanks, Kind regards, Rich.

HamishBoxer · 22nd Feb 2015, 10:16 pm

There is a regulator panel in the middle top of the chassis and it needs setting up as per manual plus needs to be ok.VT7 comes to mind as a possible failure.

Then the EHT generator board is another suspect possibly it is above the line panel RHS.

11th Nov 2013, 11:40 am	#82
MALC SCOTT Octode Join Date: Aug 2006 Location: Willington, County Durham, UK. Posts: 1,499	Re: BRC 2000 restoration. Hi Mike, i dont have another decoder pcb to try but i am certain that it is faulty. I have replaced all of the silicon, a lot of out of spec resistors and all electrolytics. Also a new xtal. The main problem is trying to fault find, the size of this set is huge. If all else fails i will take up your very kind offer to repair the decoder. After a few days running, the crt is now brilliant and tests perfect on my BK467 tester, Malc. __________________ Malc Scott

11th Nov 2013, 2:47 pm	#83
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,921	Re: BRC 2000 restoration. Hi Malc The decoders are on their way to you, but I think you might end up having more fun with them than with yours! Still, they will give you a source of spares if nothing else. Glyn

11th Nov 2013, 4:03 pm	#84
MALC SCOTT Octode Join Date: Aug 2006 Location: Willington, County Durham, UK. Posts: 1,499	Re: BRC 2000 restoration. Thank you __________________ Malc Scott

22nd Feb 2015, 10:16 pm	#86
HamishBoxer Dekatron Join Date: Aug 2007 Location: W.Butterwick, near Doncaster UK. Posts: 8,932	Re: BRC 2000 restoration. There is a regulator panel in the middle top of the chassis and it needs setting up as per manual plus needs to be ok.VT7 comes to mind as a possible failure. Then the EHT generator board is another suspect possibly it is above the line panel RHS. __________________ G8JET BVWS Archivist and Member V.M.A.R.S