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| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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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 |
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#2
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Grundig CTV with white screen then powers off
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 _____ "radio10" wrote in message ups.com... 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 |
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#3
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Grundig CTV with white screen then powers off
On 16 Jun, 21:03, radio10 wrote:
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 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 |
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#4
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Grundig CTV with white screen then powers off
Thanks to all for your helpful comments.
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#5
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Grundig CTV with white screen then powers off
Could be missing the supply to the video output stages this would cause
maximum beam current followed by the set tripping out. John. |
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