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Heatercathodeshort · 21st Feb 2020, 11:41 am

It appears the cathodes in your CRT have completely failed. A bit like the dead parrot in the Monte Python sketch!

I think it has had it. Removing the 'boost' will probably reduce the emission to zero. The heater ballast choke on the CRT base connector has probably been shorted out to increase the CRT heater volts but this is a very short term dodge at the best of times. There may be one in each heater lead so you must check this very carefully as these shorted chokes need to be reinstated before installing a replacement CRT. Failing this the replacement will have a very short life.

A good CRT will warm up fully in 5-10 seconds. No need to list all the model numbers. You require a A56 540X 22" 30AX CRT.

I hope Polly Parrot still has a heartbeat. Regards, John.

21st Feb 2020, 11:41 am	#18
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Philips 22CS1002/05t TV It appears the cathodes in your CRT have completely failed. A bit like the dead parrot in the Monte Python sketch! I think it has had it. Removing the 'boost' will probably reduce the emission to zero. The heater ballast choke on the CRT base connector has probably been shorted out to increase the CRT heater volts but this is a very short term dodge at the best of times. There may be one in each heater lead so you must check this very carefully as these shorted chokes need to be reinstated before installing a replacement CRT. Failing this the replacement will have a very short life. A good CRT will warm up fully in 5-10 seconds. No need to list all the model numbers. You require a A56 540X 22" 30AX CRT. I hope Polly Parrot still has a heartbeat. Regards, John.