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Sony 9-90UB

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PYE625
(@pye625)
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Well I've been ebaying again and this little set was too much to resist at £25. It has it's box and it would seem all accessories plus receipt from 1970.

It was a little dusty inside, but that was all really. Just switch on, tune in and enjoy Japanese reliability. Mind you, it looks a nightmare to work on if anything did go wrong. Merely removing the rear cover was an experience in itself.

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To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 10/09/2018 8:01 pm
Marc
 Marc
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I have one of these sets which I use as my main workshop monitor. Like yours it was boxed and came with all it's accessories and a fancy 'space age' aerial too. It's dead handy being dual standard and gives a very strong clear picture.

Despite it being almost brand new in it's box I did have to tweak the scan coils to get the picture straight which is something I've noticed with other 9-90's I've seen,  great little thing though.

Marc
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Posted : 10/09/2018 8:16 pm
PYE625
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I'll check the security of the scan coils, but they seem spot on.

I was surprised at how expensive it was in 1970.....£83 !  

 

To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 10/09/2018 8:20 pm
Marc
 Marc
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I must have a delve back into the box for mine and dig out the receipt for it, I know it's dated 1969 but I can't remember how much it was but it wasn't cheap !

Marc
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Posted : 10/09/2018 8:30 pm
PYE625
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I bet the shop is no longer there in Maidstone. But the customer's house is certainly still there, and a very pretty cottage it looks too.

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To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 10/09/2018 8:38 pm
Cathovisor
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As @marc knows, I have - shall we say - one or two of these sets! I also have the monitor version, the CVM-90UB.

Lovely little things but yes, a pig to work on.

And 14-18 King Street, Maidstone has disappeared and appears to be the entrance to a shopping mall now, sandwiched between a former jewellers (Head & Hart, 12 King Street) and a branch of Pizza Hut (20 King Street).

 
Posted : 10/09/2018 9:09 pm
Marc
 Marc
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Posted by: Cathovisor

As @marc knows, I have - shall we say - one or two of these sets!

Only one....or two ?? Mmm  ? 

Marc
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Posted : 10/09/2018 9:31 pm
Lloyd
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Nice set, has it ever been out of its box?! Looks pristine inside! 

I have a slightly battered one of these with a well used CRT, takes it a while to wake up. 

Nice to see you have the final inspection tag too, I picked up a Sony reel to reel tape recorder the other week, purely because it had the tag on it! It’s a nice machine too, but if it didn’t have that I’d probably not have bought it. When I get round to it I’ll start a thread on it. 

Regards,

 Lloyd 

 
Posted : 10/09/2018 10:35 pm
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mfd70
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I've just bagged a 9-90UB  off ebay too, also at £25. I've not received it yet, I hope mine is in good condition !

 
Posted : 10/09/2018 10:47 pm
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peterscott
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Posted by: Marc

It's dead handy being dual standard and gives a very strong clear picture.

Not just dual standard! It's quad standard. You can have 405 UHF and 625 VHF if you have both buttons pressed in or both released.

On 405 VHF it suffers from dreadful lack of dc restoration but it works much better if you are using its UHF receiver.

Peter

www.nostalgiatech.co.uk

 
Posted : 11/09/2018 10:04 am
abctelevision
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I have a couple of these sets, 405 line UHF does give a better picture than 405 line VHF. I used an Aurora to record programmes in 405 lines onto a VHS video recorder (AV input). Playback via the VCR of course is UHF with a good 405 line picture on the Sony. I have since built a VHF system A modulator which I have connected to the VCR which is set to Ch2. So I can generate BBC on Ch2 via the VCR and ITV on Ch9 via the Aurora!

 
Posted : 11/09/2018 7:03 pm
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MongooseDC
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These were also used as playback monitors in early Sony reel to reel VTRs. Excellent Japanese reliability means that the TVs still work well today. I suppose that the British versions had to be specially made at the time for the 405 line market. There have been quite a flurry of these for sale on ebay recently, varying in price from 99p no reserve to about £85.00. Sony was selling these sets at a time when Japanese brands were still foreign and exotic. They knew that the only way to sell stuff here in the UK was to make it really good. They did the same with their cars and motorbikes. Sony is now a multi-national, global electronics, media and entertainment company.

 
Posted : 12/09/2018 12:59 pm
PYE625
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Yes, there have been a few on ebay recently, and I thought it would be good to have one. It's a useful size without being too small to see properly, and not too large to be in the way.

To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 12/09/2018 7:38 pm
Marc
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Posted by: PYE625

It's a useful size without being too small to see properly, and not too large to be in the way.

That's the reason I got mine.  ? 

Marc
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Posted : 12/09/2018 7:54 pm
PYE625
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This evening I have been testing the car battery adaptor device, only to find it was faulty. It was passing the current to the set, but was not regulating. I found a shorted device (2SB381) which is apparently equivalent to an AC128, so I fitted an AC153 in it's place. Luckily, there were no other faults and the adaptor is now regulating the output as it should. There is a preset with which to set the output volts by. The light green device behind the new AC153 I fitted looks like an electrolytic....it is in fact another transistor.....Yep, it fooled me at first.  ? 

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To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 12/09/2018 8:11 pm
PYE625
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Posted by: peterscott
Not just dual standard! It's quad standard. You can have 405 UHF and 625 VHF if you have both buttons pressed in or both released.

It is indeed and here below, for example, are 405 lines video on UHF compared with 405 lines on VHF.

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To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 13/09/2018 4:34 pm
PYE625
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I was wondering if mfd70's Sony might warrant a separate thread ? 

To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 14/09/2018 6:46 pm
crustytv
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PYE625
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Thanks Chris, it might have got confusing who's set we were talking about.  ? 

To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 14/09/2018 7:51 pm
peterscott
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Posted by: PYE625
 

Posted by: peterscott
Not just dual standard! It's quad standard. You can have 405 UHF and 625 VHF if you have both buttons pressed in or both released.

It is indeed and here below, for example, are 405 lines video on UHF compared with 405 lines on VHF.

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My 9-90 doesn't have quite the sharpness of focus as yours but it does appear to have better interlacing, unless you are perhaps using a rather fast shutter speed and only capturing one half frame. (This is with mine on VHF 405.)

Peter

P1050870

www.nostalgiatech.co.uk

 
Posted : 15/09/2018 8:07 am
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