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Looking For Advice on Testing TX36PF10 CRT Tube

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Mike123:
[quote1187775162=ExTV]
Hi
If you remove the tube base from the tube dose the set shut down?
If it dose it is unlightly to be the CRT.  Try reduceing the A1 slightly(follow the cap on the crt down to the loptx. There will be two pots one beneth the other. Top one focus bottom one A1 or screen.)
[/quote1187775162]

Hi many thanks for your reply sorry for delay in replying removed the tube base and the problem of the TV shutting down has stopped  guess this is not a good sign?  Found the Loptx but it has 3 adjustments which one is A1 please



[link=../../e107_files/public/1187777232_1547_FT205_loptx.jpg][img:width=100&height=75]../../e107_files/public/1187777232_1547_FT205_loptx_.jpg[/img][/link]

Mike123:
[quote1187782223=repoman]
what voltage to you have on the cathodes on the tube base panel ?
this could be as simple as the 200 volt feed missing from the base panel.
[/quote1187782223]

It’s listed as 200v in the service manual but starts at 239 and rises to 257 when the TV shuts down

P.R.Gore:
I wonder if your problem is yet solved or not. If not then try this-1>Open H.Out. transistor & check +B voltage. If it is excess, fault is in power supply. 2>If +B is normal then replace flyback capacitor. In both cases X ray protection circuit activates & set enters stand by mode. 3> If both are ok then X ray protection circuit itself cold be faulty, try replacing its discrete  components.

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