Philips T-Vette
Hi,
A while ago I was offered an unidentified dual-standard portable set. No mention of make/model has been made apart from a rough description by email. But, after a spot of google image-searching for pictures of portables, I strongly suspect it's the Stella version of the Philips T-Vette. It'll be interesting to see if I'm right when it's dropped off on Friday... ;D As I'm unfamiliar with the set, I'd be interested in any comments, stock faults, etc., which anyone knows about. Even if I've misidentified the set this will still be of interest as I might pick up a T-Vette anyway. Regards, Kat |
Re: Philips T-Vette
These are Dual Standard Portables, with only one valve (EHT Rectifier - DY51) oh, and a tube of course. They were made by Philips and sold under the Stella name.
The tube heaters tend to go open circuit, and the system switch sticks. Check the mechanics carefully and dont start it up for the first time with the tube base on. The Power Supply stages tend to go a bit high, especially the tube voltage. Which is why the heaters go pop. Nice sets when they work (Aren't they all) but can be nasty when they don't! Cheers, Steve P |
Re: Philips T-Vette
Hi Steve,
Thanks for the tip - that could make the difference between a "Wanted - CRT" posting and a set perhaps only needing something more readily available :) I'll mention this in an email, suggesting not to try the set out after retrieval from a loft before delivery. Whether it's a T-Vette or not, that's possibly a good suggestion. I like this forum; there seems to be a good chance someone here will know something about anything :) Cheers, Kat |
Re: Philips T-Vette
Hi Kat,
As though you haven't enough encounters with their kind in the pipeline, there are a couple of AF115s and an AF117 in residence ;) One of the 115s was responsible for sudden complete lack of signal on one of my three T-Vettes. The sets have been remarkably free of trouble otherwise. Paul |
Re: Philips T-Vette
I obtained a mint condition Philips model years ago and is the only set I have that's never had a component replaced. Has very little use though.
Watch out for dry joints, these can cause peculiar effects such as frame collapse on a blank channel and full scan on a locked station! (Dry joint on frame output transistor). Also watch the rear three pin plug- a poor design akin to a 3-pin plug without a cord grip. The wiring can break easilly. What I find irritating is the single line hold control which needs re-setting when selected between 405 and 625. Does anyone know if there's a pre-set control internally? Both my examples are like this. The ability to replay images from a VCR is a complete write off ,(don't know of any mods here), but stable with non Macrovision protected DVDs. I have another example which suffers from low gain and frame cramping but havn't got round to looking at it yet. It was "Simply Years Ahead". Incredible to think the sets dates from as early as 1966. Cheers, Brian |
Re: Philips T-Vette
Line Hold on these has two internal controls. L2050 and L2051.
L2050 is for 625 line operation. L2051 for 405 (To me it looks like both!). L2050 is out of circuit on 625 Lines. Switch to 405, adjust L2051, go to 625, adjust L2050 to bring in 625. Cheers, Steve P |
Re: Philips T-Vette
PaulRK's comments about AF11x transistors reminds me....I'm sure this model needlessly uses one as an audio pre-amp? A strange choice if I'm correct!
Kat - I've got the original Philips manual if you need a scan! |
Re: Philips T-Vette
Hi,
Well, I sent an email with a link to this page in it; the reply confirms I got the right set. I gather there's full service information coming with the set; but thanks for the offer, Stewart :) Ah, more AF11x transistors... excellent :-D Hopefully tomorrow I'll be posting a pic or two and an initial report. I suppose there's a chance it might be AOA in which case all I'll be able to do is use it ;) Regards, Kat |
Re: Philips T-Vette
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Re: Philips T-Vette
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Paul |
Re: Philips T-Vette
There is a Transistor AF181, but I don't know if it gets the PROBLEM though. I think I'd have heard of it if it did. Does anyone know one way or't'other?
Cheers, Steve P |
Re: Philips T-Vette
Thanks Steve P. I should've remembered the line osc. coils!
Cheers again! Brian |
Re: Philips T-Vette
Hi,
It's arrived, it's a Philips T-Vette (not the Stella version) and it's very unwell. But the poor little thing has competition and might have to wait a little while for attention... :-) Regards, Kat |
Re: Philips T-Vette
Just tell me what appears to be wrong, I'll get the manual out and have a think.
Cheers, Steve P |
Re: Philips T-Vette
1 Attachment(s)
Hi Steve,
Belated reply... Quote:
What I know so far:
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Re: Philips T-Vette
All the things listed are cosmetic, and somewhere in my garage (Ho Ho!) I've got a Philips T-Vette minus the tube. For why read above.
If you want to rob it for bits, I'll put your name on it. In the meantime, power it as above and see what is what. These aren't paticularly tricky to sort out. The solid state DY51 was common, as these are a bit tricky to get hold of. (I've got one somewhere!) Hope this helps. Steve P P.S. Tube Volts- 11.0 V 66mA. Make sure the spark gap is clean! |
Re: Philips T-Vette
Hello Kat,
This was Philips answer to the little Sony 9-306 and 9-90 together with others from Japan. In comparison it was a poor performer both from operation and reliability. I remember visiting Philips service dept at Croydon in the late 60's [The set dated from 66/67] and they had a mountain of them stacked on Dexion racks awaiting service. The rack must have been 50ft long and 8ft high! The 405 performance is quite good but 625/UHF seemed to produce a milky result lacking any punch. They did vary and of course and there were always the good ones. I have two of them. One works very well and the other is about average. Very well made sets but a bit dated in design even for the mid 60's. Hope you get it sorted. Regards John. |
Re: Philips T-Vette
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Peter. |
Re: Philips T-Vette
Yes, CRT Heater is 11 Volts. Follow HeaterCathodeShort's advice here...
https://www.vintage-radio.net/forum/...ad.php?t=14556 Saves me writing it all out again! Cheers, Steve P |
Re: Philips T-Vette
Hi Peter,
Quote:
So if the heater voltage is too high, the supply to the entire set is high, probably due to a fault in the power supply circuitry. Alternatively it could just be out of adjustment but my experience is that things don't usually drift much. But, if this supply is significantly more than 11V, the most likely suspect is that transistor T1513 (AD149) has failed short-circuit. The set (and CRT heater) would then be run from whatever unregulated voltage is present after rectification and smoothing, probably around 13V or more. While the rest of the set is likely to survive over-voltage, the CRT heater is unlikely to fare so well. Hope that makes sense, Regards, Kat |
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