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Forum 135

B&W TV JVC Videosphere

Black & White Television

Last Post by slidertogrid 8 months ago

3 Posts

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slidertogrid

(@slidertogrid)

Posts: 1200

Prominent Member Registered

Topic starter

At last I have obtained a JVC Videosphere! I have been looking for one for some time as a companion for my Keracolor. Finally one turned up on ebay at the right price.

The only problem was that it was collection only and was hundreds of miles away. At first I tried to arrange for a courier to collect it but that was a non starter. The booking site took my deposit and then failed to book the courier. When I eventually got past the auto answer bots and managed to email them I got an apology and the explanation that "The system had failed". I was advised to try again and then claim a refund for the failed booking. I decided that there was no guarantee the same problem wouldn't occur again so I replied that I would not be "trying again" and requested a refund, which in time I got.

The vendor offered to pack the set and take it to a UPS drop off point if I sent a courier label, this was a hell of a lot cheaper than the first place, in fact less than the first place wanted as a deposit. So I accepted his kind offer and decided to take the risk! Two days later and it is here. I have a couple of small repairs to do for a friend and then it will be on the bench!

Posted : 08/01/2024 1:02 pm

unit no 16 and Lloyd reacted

Lloyd

(@lloyd)

Posts: 1968

Prominent Member Registered

Pleased to see it arrived safely! These seem fairly rugged, mine survived Royal snail! Chances are it’ll probably work, the tube is tired on mine, takes ages to come up, so it must have seen plenty of use.

Regards,

Lloyd

Posted : 08/01/2024 1:31 pm

slidertogrid

(@slidertogrid)

Posts: 1200

Prominent Member Registered

Topic starter

Well the first signs are promising but it has been looked at by someone... The set won't always start up, switching on and off produces a vertical line for a second when switched off, turning back on again produces a snowy raster. Switching off again the procedure has to be repeated to get the set to come on. I tried some signal and got a very snowy picture flickering badly.

Removing the rear cover revealed the Aerial connections to the tuner disconnected from the sockets on the rear, no wonder the picture was snowy. I connected some clips to the tuner and tried some signal, that cured the low gain but the picture still flickered and rolled in both directions. At this point I decided to check the 12v supply line. 14.5 Volts across the tube heater! I found the set 12V pot has no effect. First job is to find this fault. Hopefully fixing this will maybe sort out some of the other problems... Other than the disconnected aerial connections it doesn't look as if it has been got at otherwise.