15th May 2020, 1:42 pm | #121 |
Octode
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Re: Fixing a GEC BT 302 Television
yes
what do you intend to use as a signal source.
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Stephen _________"It`s only an old telly" ___ |
15th May 2020, 1:52 pm | #122 |
Hexode
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Re: Fixing a GEC BT 302 Television
I have a free view box,
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15th May 2020, 2:09 pm | #123 |
Octode
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Re: Fixing a GEC BT 302 Television
That will not work on its own, you need a 405 line standards converter to provide the final signal that you plug into the set.
The freeview (which is 625 lines) can be used to supply the video signal to the 405 standards converter
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Stephen _________"It`s only an old telly" ___ |
15th May 2020, 3:02 pm | #124 |
Dekatron
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Re: Fixing a GEC BT 302 Television
If you think you have mixed up the valves. Lay them all out on a white cloth and post a picture. I/we can probably identify them. John.
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15th May 2020, 3:04 pm | #125 |
Hexode
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Re: Fixing a GEC BT 302 Television
What about a dvd player will that work ?
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15th May 2020, 3:05 pm | #126 |
Hexode
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Re: Fixing a GEC BT 302 Television
Yes ok i show you the valves.
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15th May 2020, 3:06 pm | #127 |
Hexode
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Re: Fixing a GEC BT 302 Television
some of the valves have letters numbers it just I don't know where they go
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15th May 2020, 3:18 pm | #128 |
Octode
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Re: Fixing a GEC BT 302 Television
No, nothing will work without a standards converter
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Stephen _________"It`s only an old telly" ___ |
15th May 2020, 3:27 pm | #129 | ||||
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Re: Fixing a GEC BT 330 Television
Quote:
Quote:
Quote:
Quote:
Cheers Mike T
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15th May 2020, 3:45 pm | #130 |
Octode
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Re: Fixing a GEC BT 302 Television
These will help you with the valve numbers and positions
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Stephen _________"It`s only an old telly" ___ |
15th May 2020, 3:51 pm | #131 |
Hexode
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Re: Fixing a GEC BT 302 Television
Thanks for the diagram any advice how I can see worn out labels on valves?
Hello yes sorry someone said I can use a free view box a while ago |
15th May 2020, 3:57 pm | #132 |
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Re: Fixing a GEC BT 302 Television
Sorry but no they didn't
Colourstar told you in post #8 that you needed a 625 to 405 standards converter and they cost around £200 It's worth mentioning before you dive in to the repair that both your sets work on the old 405 line system, so you'll need a 625 to 405 standards converter to use them with a dvd player etc. Without a converter these sets are purely ornamental. They cost around £200 so it's worth thinking about whether you want to invest in one before you go much further. Best of luck, Steve Your reply was that you had one. Post #9 Yes thank you for the advice I have one Perhaps you need to read the posts more carefully? Cheers Mike T
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15th May 2020, 3:59 pm | #133 |
Octode
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Re: Fixing a GEC BT 302 Television
that requires you to lay the valves out on some plain paper and take a picture, write a number under each valve starting with 1 etc so they can be identified.
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Stephen _________"It`s only an old telly" ___ Last edited by Freya; 15th May 2020 at 4:04 pm. Reason: pic added |
15th May 2020, 4:01 pm | #134 |
Hexode
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Re: Fixing a GEC BT 302 Television
No sorry, I don't mean someone told me here. someone I know.
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15th May 2020, 4:18 pm | #135 |
Hexode
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Re: Fixing a GEC BT 302 Television
Right side Valves
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15th May 2020, 4:28 pm | #136 |
Octode
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Re: Fixing a GEC BT 302 Television
valve 1 might be V4 or V5
valves 3 and 5 go into V6, V7 valve 4 goes to V17 not sure on number 2 yet
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Stephen _________"It`s only an old telly" ___ Last edited by Freya; 15th May 2020 at 4:45 pm. Reason: modified result |
15th May 2020, 4:33 pm | #137 |
Hexode
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Re: Fixing a GEC BT 302 Television
In that order 1, 3 and 5 go into V5, V6, V7
valve 4 goes to V17 |
15th May 2020, 5:01 pm | #138 |
Octode
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Re: Fixing a GEC BT 302 Television
Im out of battery until i get home..
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Stephen _________"It`s only an old telly" ___ |
15th May 2020, 5:24 pm | #139 |
Hexode
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Re: Fixing a GEC BT 330 Television
Ok thanks for the help.
Hopefully, you can help later when you get home. Anyone here who can help out? |
15th May 2020, 7:35 pm | #140 |
Octode
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Re: Fixing a GEC BT 302 Television
Hopefully that is the sound of a healthy 405 line 'whistle', which if you've never experienced a vintage television up close and personal before is perfectly normal. Thats what you- and anyone else in the house- has to live with if you want to use a tv set of that era. You should hear the frequency vary considerably in pitch as you turn the horizontal hold control. If you set the control about mid position that should in theory be about right. The 'whistle' can sound quite penetrating! Some makes/models of set were louder than others.
Like me you probably grew up watching 625-line tv sets in the 1970s/80s/90s where the frequency is much higher and hardly noticeable, but it is still there. Steve |