UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Philips 663A combined radio/television 1948

Duke_Nukem · 7th May 2021, 7:05 am

Scraping the bottom of the barrel for ideas, but earlier pictures without the test card the raster looked evenly lit. Now the timebase is synchronised, its very non linear. What happens if you temporarily disconnect the sync and manually adjust timebase to display test card best as you can ?

Otherwise if its not R83/84/87 related then await the new ECH35.

I take it line hold and height pots aren't at one end of their range, which might mean they are masking the true cause ?

TTFN,
Jon

7th May 2021, 7:05 am	#26
Duke_Nukem Octode Join Date: Jan 2003 Location: Birmingham, West Midlands, UK. Posts: 1,268	Re: Philips 663A combined radio/television 1948 Scraping the bottom of the barrel for ideas, but earlier pictures without the test card the raster looked evenly lit. Now the timebase is synchronised, its very non linear. What happens if you temporarily disconnect the sync and manually adjust timebase to display test card best as you can ? Otherwise if its not R83/84/87 related then await the new ECH35. I take it line hold and height pots aren't at one end of their range, which might mean they are masking the true cause ? TTFN, Jon