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Heatercathodeshort · 25th Apr 2011, 10:28 am

Check the H.T. as Trevor suggests. Then check line coupling capacitor to grid of line output valve. Next capacitor is boost storage that usually has a value of around .25uf-.5uf. It is connected between the H.T. rail and boost rail. If line output valve is stressed, remove top cap from boost diode and see if stage livens up. If it does, this suggests the fault lies in the boost capacitor mentioned. The LOPT could be faulty and may have been the reason the receiver was set aside originally. The EHT rectifier should be lit if there is EHT present. It should be a noticable glow.
The CRT will be fine. The Philips/Mullard AW53-88 is indestructible and will give 100% emission when the set is sorted. John.

25th Apr 2011, 10:28 am	#6
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Help with a HMV TV Check the H.T. as Trevor suggests. Then check line coupling capacitor to grid of line output valve. Next capacitor is boost storage that usually has a value of around .25uf-.5uf. It is connected between the H.T. rail and boost rail. If line output valve is stressed, remove top cap from boost diode and see if stage livens up. If it does, this suggests the fault lies in the boost capacitor mentioned. The LOPT could be faulty and may have been the reason the receiver was set aside originally. The EHT rectifier should be lit if there is EHT present. It should be a noticable glow. The CRT will be fine. The Philips/Mullard AW53-88 is indestructible and will give 100% emission when the set is sorted. John.