Decca CS2030 - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Welsh Anorak · 18th Mar 2017, 3:57 pm

Hi
It's the one just to the left of the chroma delay line - the small coil is near it. It won't need much of an adjustment, but you do need colour bars or a red raster to get it accurate.
Glyn

Philips210 · 19th Mar 2017, 9:41 pm

Hi

I agree about the Hanover blinds being noticeable on the these sets and thinking back I did find it tricky to eliminate them completely. When it was broadcast, I found it was best to use Test card G (a variation on the Philips PM5544 test pattern). The brackets were the best areas to show up delay line, phase, and matrixing errors. I later acquired a Philips PM5508 pattern generator which produces patterns for delay, phase and matrix checks, a really useful pattern generator for decoder alignment.

Regards
Symon.

Hunts smoothing bomb · 20th Mar 2017, 7:27 pm

Thanks chaps for the pointers, I'll give it a go when I get chance, house is upside down at the moment as we have the decorators in.

Cheers

18th Mar 2017, 3:57 pm	#21
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,925	Re: Decca CS2030 Hi It's the one just to the left of the chroma delay line - the small coil is near it. It won't need much of an adjustment, but you do need colour bars or a red raster to get it accurate. Glyn

19th Mar 2017, 9:41 pm	#22
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,578	Re: Decca CS2030 Hi I agree about the Hanover blinds being noticeable on the these sets and thinking back I did find it tricky to eliminate them completely. When it was broadcast, I found it was best to use Test card G (a variation on the Philips PM5544 test pattern). The brackets were the best areas to show up delay line, phase, and matrixing errors. I later acquired a Philips PM5508 pattern generator which produces patterns for delay, phase and matrix checks, a really useful pattern generator for decoder alignment. Regards Symon. Last edited by Philips210; 19th Mar 2017 at 9:44 pm. Reason: typo

20th Mar 2017, 7:27 pm	#23
Hunts smoothing bomb Octode Join Date: Oct 2005 Location: Wimborne, Dorset, UK. Posts: 1,407	Re: Decca CS2030 Thanks chaps for the pointers, I'll give it a go when I get chance, house is upside down at the moment as we have the decorators in. Cheers __________________ Lee