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| Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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4th Nov 2023, 7:30 pm
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#1 |
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Pentode
Join Date: Aug 2005
Location: Northwich, Cheshire, UK.
Posts: 198
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Bush A98
Hi All,
There's a white circular label on the back of the rf chassis here that says 'a98', yet this draws a blank on the google and the service data. It's a boxy mid/late 50's set, resembling a T67 that popped up in a search Thoughts welcome as to how to ID and obtain a diagram. Unnervingly, the rhs glass fuse on the main chassis is missing, as was one of the screws holding the screening cover of the LOPT - otherwise all there  Many Thanks John |
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4th Nov 2023, 7:46 pm
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#2 |
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Heptode
Join Date: Sep 2009
Location: Kinver, Staffordshire, UK.
Posts: 608
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Re: Bush A98
Hi John
Your set could be a TV56 or TV63 , depends on the size of the CRT. The A98 is not a model number but telling you which version of RF unit is fitted , there will be one of those white discs on the timebase chassis as well. I'm sure someone will tell you where to find the circuit diagram. Robin |
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5th Nov 2023, 3:58 pm
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#3 |
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Octode
Join Date: Dec 2019
Location: Owston Ferry, North Lincolnshire, UK.
Posts: 1,538
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Re: Bush A98
What is printed on the rectangular label on the timebase chassis.
Dave
__________________
Quote "All is hyperthetical, until it isn't!" (President Laura Roslin, Battlestar Galactica) |
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5th Nov 2023, 4:54 pm
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#4 | |
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Dekatron
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 3,492
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Re: Bush A98
Quote:
The A98 receiver unit and A93 timebase unit were fitted in a TV66. The TV56 is the preceding model, but IIRC, the timebase unit used an EY51 wired-in EHT rectifier and a different under-chassis tag panel layout. Last edited by dazzlevision; 5th Nov 2023 at 5:03 pm. |
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5th Nov 2023, 6:22 pm
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#5 |
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Pentode
Join Date: Aug 2005
Location: Northwich, Cheshire, UK.
Posts: 198
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Re: Bush A98
Thankyou to all,
It looks very like a dirtier version of the snaps you've attached, and the rectangular label reads 22b/45b(or 8?)02. Without powering up I've divined that the electrolytics are s/c. I'll replace a few boost cap's and cut the h.t. to the receiver chassis before thinking about powering More anon John |
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