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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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7th May 2014, 9:35 pm | #41 |
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Re: Saved from the Biffa Bin: Bush TV22.
Using the original core stack seems to be important, I suspect both the metal alloy and it's rolling/processing were important in getting the saturation characteristic right and having a linear characteristic right up to it.
We need to keep a look out now for John on his forays, seeding interesting sets where they will be found. If it's the lorry with the Hiab, then there's something massively pre-war in the offing. Probably with a carefully induced sync separation fault. Damned elusive.... no... no that was the Pimpernel.... David
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7th May 2014, 9:46 pm | #42 | |
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Re: Saved from the Biffa Bin: Bush TV22.
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The picture in post #32 is superb, full congratulations to both Ed and David for their superb work. Many thanks also to Hamid re his tip on using a Thorn 1500 Line Osc. Blocking Osc. transformer. Worth noting as an emergency repair while one awaits a rewind. Cheers, Brian Last edited by Focus Diode; 7th May 2014 at 9:55 pm. |
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8th May 2014, 12:10 am | #43 |
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Re: Saved from the Biffa Bin: Bush TV22.
And here is a few more to be getting on with.
DFWB. |
8th May 2014, 7:03 am | #44 |
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Re: Saved from the Biffa Bin: Bush TV22.
So it's the BBC's fault! I like that one..
Must admit I often wondered if that Doctor Who nonsense was filmed in low definition just to cover up the dodgy film sets. After all, it is just a kids programme and they would never have noticed. I have a large number of VHS tapes I recorded during the last months of 405 transmission in 1985. To see if your excuse holds up I will play a few through the TV22 after my visit to the NVCF. They are now almost 30 years old. Amazing! I have omitted that hum cancelling .75uf on my two terrible twins. Disconnecting it produced a tiny amount of ripple that would never be noticed by even the most fussy customer. It is rather a strange addition by Bush and I can't recall any other receiver that uses a similar arrangement. John. |
8th May 2014, 7:04 am | #45 |
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Re: Saved from the Biffa Bin: Bush TV22.
Interesting read David,
The set looks like it performs well, I don't know why John dislikes them so. I have one that I did about 5/6 years ago and I like it alot. I think it's jealousy, I reckon really he loves them! You should surprise him by turning up unannounced, offload a few to him and tell him to get first first light on them all within the hour or else you will be setting off to his museum to claim the first victim! All the best
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8th May 2014, 9:13 am | #46 | |
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Re: Saved from the Biffa Bin: Bush TV22.
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I did run the 22 with a replacement, but there was no real visible difference apart from the sets power consumption rising with it in place. Maybe it did make a difference back in the early 50's? Mark |
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8th May 2014, 12:48 pm | #47 |
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Re: Saved from the Biffa Bin: Bush TV22.
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8th May 2014, 5:33 pm | #48 |
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Re: Saved from the Biffa Bin: Bush TV22.
Hi Gents, I've examined the stampings and they look like normal Stalloy, not grain orientated material.
If I get a chance I'll try and do a B-H curve to confirm. Stalloy could be the material of choice; as well as being cheap it has quite a sharp Knee at saturation, a desirable characteristic for a blocking oscillator. Ed |
8th May 2014, 6:15 pm | #49 | |
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Re: Saved from the Biffa Bin: Bush TV22.
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Done! I feel I am being set up. I can just imagine the heaps of junk that would be delivered. Mouldy shed finds, flat tubes, shorted LOPT's, O/C blocking oscillator transformers and all the valves in the wrong places. Can I bust them up if I fail to complete the challenge? I'll bring my mobile cat neutering unit to Mikey's bash so bring along your furry friends.. John. |
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8th May 2014, 7:58 pm | #50 |
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Re: Saved from the Biffa Bin: Bush TV22.
John's final comment has given me an evil thought, the nature of which will become apparent on Saturday.
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8th May 2014, 9:02 pm | #51 |
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Re: Saved from the Biffa Bin: Bush TV22.
Intriguing! I can't wait to find out!
Cheers
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9th May 2014, 12:51 pm | #52 | |||||
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That said, washing machines are much less desirable than 405 TVs. Quote:
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Always better to try and get something from the time that survives on its original format, like The Avengers or any programmes still on 405 2" VT. Rather than a mediocre transfer of 2" material to cheap, poorly stored film made 50 years ago. Quote:
Certainly, it has consistently been watched by more adults than children. Last edited by Paul Stenning; 10th May 2014 at 2:36 pm. Reason: Merged five consecutive posts into one |
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14th May 2014, 6:48 pm | #53 |
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Re: Saved from the Biffa Bin: Bush TV22.
After giving a good account of it's self the TV22 has developed a strange fault. The picture hooks at the top and there is a ghost effect. Also there is a buzz on the sound. An alternative Aurora was tried, results are just the same. It's most likely an HT decoupling capacitor has failed.
I'd go for C25. It's located on the main chassis. HT to the receiver unit from the main deck is the pin designated as A1 on the five pin plug. DFWB. Last edited by FERNSEH; 14th May 2014 at 6:53 pm. |
14th May 2014, 7:12 pm | #54 |
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Re: Saved from the Biffa Bin: Bush TV22.
Oh dear! The little brat has thrown a tantrum..John.
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14th May 2014, 8:26 pm | #55 |
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Re: Saved from the Biffa Bin: Bush TV22.
No not a tantrum, it’s just hiccups ;-)
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14th May 2014, 8:47 pm | #56 |
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Re: Saved from the Biffa Bin: Bush TV22.
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14th May 2014, 9:25 pm | #57 |
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Re: Saved from the Biffa Bin: Bush TV22.
Yes, I was there and the results, both picture and cabinet looked absolutely superb!
Sorry to hear of the fault developing. Hope it proves to be an easy fix. Cheers, Brian |
14th May 2014, 11:26 pm | #58 |
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Re: Saved from the Biffa Bin: Bush TV22.
How do you like that? I returned to the shop to repair the set and it's fixed itself! Nevertheless, I'd think it would be good policy to change C25.
Check out that glossy cabinet. Pity about those holes which were for one of those oil filled magnifiers. You see a lot of TV22s with them. That mask needs some attention. An Eau de Nil colour. DFWB. |
15th May 2014, 8:24 am | #59 | |
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Re: Saved from the Biffa Bin: Bush TV22.
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Were these later models? Nice job on the cabinet, sounds like a good formula, I use T-cut followed by neutral shoe wax, it really makes bakelite gleam Mark |
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15th May 2014, 11:43 am | #60 | |
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Re: Saved from the Biffa Bin: Bush TV22.
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I think that's right, the set which is the subject of this topic was made in 1952 and must be one of the last Mark 1 models. The sets made in 1950 and 51 had white masks. DFWB. |
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