Gold star VW-300. Burning smell... now vertical white lines - UK Vintage Radio Repair and Restoration Discussion Forum

dajahew1 · 13th Oct 2013, 10:12 pm

Hey all
I've had this set for a while, quite a cheap feeling one, from 1979, a Gold star VW-300. It was working perfectly well for quite a few months, until this evening when a horrible burning smell started emanating from it, and now there's some vertical white lines running from the top to the bottom of the screen (see attached pic). Does anyone have an idea of what part might need replaced/servicing? Please be aware I don't have much experience working with old tv sets. I'm gonna leave the set switched off for a few days so it can discharge.

Any help would be greatly appreciated.
Thanks, dajahew

Heatercathodeshort · 14th Oct 2013, 7:47 am

Just a few thoughts. The line linearity coil could be dry joint causing it's damping resistor to take all the current and burn up. Another possible cause could be the scan coupling capacitor or line output stage 3rd harmonic tuning capacitors dry jointed and finally shorted. I don't know this particular receiver but if something has burned, a very critical look around the line output stage may be revealing. John.

13th Oct 2013, 10:12 pm	#1
dajahew1 Retired Dormant Member Join Date: Jul 2010 Location: Coleraine, Northern Ireland Posts: 16	Gold star VW-300. Burning smell... now vertical white lines Hey all I've had this set for a while, quite a cheap feeling one, from 1979, a Gold star VW-300. It was working perfectly well for quite a few months, until this evening when a horrible burning smell started emanating from it, and now there's some vertical white lines running from the top to the bottom of the screen (see attached pic). Does anyone have an idea of what part might need replaced/servicing? Please be aware I don't have much experience working with old tv sets. I'm gonna leave the set switched off for a few days so it can discharge. Any help would be greatly appreciated. Thanks, dajahew Attached Thumbnails

14th Oct 2013, 7:47 am	#2
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Gold star VW-300. Burning smell... now vertical white lines Just a few thoughts. The line linearity coil could be dry joint causing it's damping resistor to take all the current and burn up. Another possible cause could be the scan coupling capacitor or line output stage 3rd harmonic tuning capacitors dry jointed and finally shorted. I don't know this particular receiver but if something has burned, a very critical look around the line output stage may be revealing. John.