Grundig CTV with white screen then powers off

Have a Grundig T70-1020 ctv that powers up with a full white/pinkish screen with flyback lines showing but no picture discernable (sound is ok), then after 10 seconds psu shuts down back to standby. Something EHT perhaps? All comments welcome.

Richard UK

Reply to
radio10
Loading thread data ...

This is usually caused by a short in the CRT. It is possible, but rare, to have a failure in the driver circuits to the CRT. With proper troubleshooting, the actual fault can be determined.

--
JANA
_____
 Click to see the full signature
Reply to
JANA

If there were an EHT problem the screen would be black.

Check voltages on the various crt electrodes - except for anode & focus of course.

NT

Reply to
meow2222

Thanks to all for your helpful comments.

Reply to
radio10

Could be missing the supply to the video output stages this would cause maximum beam current followed by the set tripping out. John.

Reply to
John

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.