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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

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Old 26th Apr 2024, 7:16 am   #1
tv baron
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Default Bush TV22

Hi bit of help on line stage i dont have an eht meter i get a nice arc of one side of the ey5i on coil c but not a lot to tube the heater is lit on the ey51 do the over winds go faulty coil f thanks
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Old 26th Apr 2024, 12:30 pm   #2
Freya
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Default Re: Bush TV22

EY51`s go bad, their leads have a habit of dropping off at the pinch. But the overwinds also do suffer from both saturation and shorted turns.
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Old 26th Apr 2024, 7:16 pm   #3
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Default Re: Bush TV22

There is loads of information on the LOPT's within these forums. It will probably benefit from drying out and the preferred way is to pass a small current through the overwind so that it gets warm (not hot) for several days.

Try doing a search TV22 LOPT or Bush LOPT
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Old 29th Apr 2024, 8:03 am   #4
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Default Re: Bush TV22

Well worth drying out the LOPT, these have a habit of developing shorted turns.
I always fit a new EY51 to any set I restore, usually increases EHT by 1 to 2 kv.


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Old 10th May 2024, 6:55 pm   #5
tv baron
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Default Bush tv22

Hi now starting to go round on caraculs have a set wit no raster but sound the brightness pot with about 100 volts get spark of over wind ey51 lit no eht probe but put avo on 3kv on final anode went right over on the metrosil to a1 on transformer side 250 volts other side to tube15 volts suspect transformer winding but not sure any help thanks
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Old 10th May 2024, 7:06 pm   #6
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Default Re: Bush tv22

I would not put an AVO on final anode! Could be higher with correct set up, trust Ion Trap is in the right spot?
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Old 12th May 2024, 8:49 pm   #7
tv baron
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Default Re: Bush TV22

Hi have now got EHT but low A1 volts sorting out to 100 volts give raster but low volts from the Metrosil what can I replace it with
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Old 12th May 2024, 9:19 pm   #8
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Default Re: Bush TV22

If I remember correctly there is a sneaky wax paper capacitor hidden under the tagboard that can drag the A1 volts low.

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Old 12th May 2024, 9:57 pm   #9
tv baron
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Default Re: Bush TV22

Thanks Frank spot on now have a raster well hidden I'd changed all the others but you cannot see it thanks for info one step closer
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Old 22nd May 2024, 12:22 pm   #10
tv baron
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Default Re: Bush TV22

Hi have now got a signal to it and a hedgehog test card can lock frame between two half's and mods out there for frame stage thanks
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Old 22nd May 2024, 4:24 pm   #11
tv baron
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Default Bush tv22 frame o/p

hi having problems frame will lock but two half frames are there any mods out on this old lady thanks
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