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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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23rd Nov 2008, 9:33 pm | #1 |
Heptode
Join Date: Dec 2006
Location: Milton Keynes, Buckinghamshire, UK.
Posts: 696
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Thorn 1400 Pt1
Hi all,
It's been a couple of weeks sinse I asked Thorn 1400 or Ferranti 146. Well, it was decided that I'd tackle the 1400 first. When I bought it, it did sort of run, terribly low sound, lack of width and hight and generally poorly with a wiff of hot unimpressed resistors. Basically every cap with TCC was absolutely miles out of spec as you can see from the pictures. Replacing these cured the width, height and to some degree the sound. Here are some pictures to amuse you... and don't forget to check out 1400 Pt. 2 Dr. Dave
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24th Nov 2008, 8:50 am | #2 |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
Posts: 4,609
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Re: Thorn 1400 Pt1
That's so you can't hear the intercarrier buzz, Dave!
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Mike. |
24th Nov 2008, 8:53 am | #3 |
Heptode
Join Date: Dec 2006
Location: Milton Keynes, Buckinghamshire, UK.
Posts: 696
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Re: Thorn 1400 Pt1
Actually Mike, it's not too bad !
Even better when plugged into a modulator
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24th Nov 2008, 1:40 pm | #4 |
Nonode
Join Date: Aug 2007
Location: South Bradford, West Yorkshire, UK.
Posts: 2,571
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Re: Thorn 1400 Pt1
I had similar problems with that type of cap in a Thorn 980 earlier this year. On my DMM the caps were way out of spec but on checking them on a component analyser at work the value was almost within spec but the series resistance had increased dramatically. This down to the different method the meter and analyser use to measure capacitance.
Which ever method was used the caps were faulty and had to be replaced. Keith |