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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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9th Oct 2018, 1:57 pm | #21 |
Heptode
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Re: Dynatron CTV63 problem
More pictures....
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9th Oct 2018, 1:59 pm | #22 |
Heptode
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Re: Dynatron CTV63 problem
And finally....
You more photos are required please let me know. Thanks again Richard. |
9th Oct 2018, 2:12 pm | #23 |
Dekatron
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Location: Near Swindon, North Wiltshire, UK.
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Re: Dynatron CTV63 problem
The large electrolytic capacitor on the Power Supply board is made by "LCR" and does not suffer from the "loose rivets" syndrome, so does not require replacement.
From your photos, the deflection coil "Vee notch" seems to be correctly aligned with the CRT reference mark. |
9th Oct 2018, 2:49 pm | #24 |
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Re: Dynatron CTV63 problem
Hi Mark,
Thanks for the reply. Phew, that's a relief regarding that capacitor. Incidentally, the Vee notch does look to be slightly off centre when I looked at it. There is a raised vertical line on the crt but it wasn't in line with the centre of the Vee notch. It was in line with the left Vee, if that makes sense? The photo must make it look aligned correctly. Thanks again Richard. |
9th Oct 2018, 2:56 pm | #25 |
Heptode
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Re: Dynatron CTV63 problem
Crt line position on Vee notch....
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9th Oct 2018, 3:36 pm | #26 |
Dekatron
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Re: Dynatron CTV63 problem
OK, that alignment would show up as a slightly non-squared picture within the CRT screen, tilting down to the left. So, you might want to slacken off the deflection coils clamp ring (one screw) and rotate the deflection coil assembly until the V and the line are correctly aligned. Then, re-tighten the clamping band screw (but don't overdo it).
You might find the deflection coil assembly is reluctant to rotate after the clamping screw is slackened off. This is due to the initial "stiction" between the plastic of the deflection coils moulding and the glass neck of the CRT. Once that is overcome, the assembly should rotate easily. |
9th Oct 2018, 4:00 pm | #27 |
Heptode
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Re: Dynatron CTV63 problem
Thanks Mark.
I shall take a look to see if I can see the clamp ring and gently turn the coil thing. Thanks again Richard. |
9th Oct 2018, 5:14 pm | #28 |
Heptode
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Re: Dynatron CTV63 problem
I've just slackened off that coil clamp ring. I'm assuming it's the grey plastic flat shim looking thing, and slightly rotated the deflection coil to as near centre as I could see. The picture isn't as skewed as before but I must have unintentionally touched a colour adjustment as now the picture has a greeny/yellowy tint to it. Oops.
Also the sharpness/focus needs to be tweaked too. Is the focus adjustment pot easy to find in the set please? The attached photo is supposed to be a black and white Beatles film |
9th Oct 2018, 5:27 pm | #29 |
Dekatron
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Re: Dynatron CTV63 problem
You appear to have slackened the wrong part of the assembly. I did say slacken a screw.
Here is a diagram of the deflection coil assembly, showing the position of the screw and clamp. |
9th Oct 2018, 5:41 pm | #30 |
Heptode
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Re: Dynatron CTV63 problem
Oh dear.
I didn't see the screw and clamp on there at all. The previous owner might have removed it. I shall double check a little later and let you know. I just hope I've not broken the tv set Thank you for the diagram Richard. |
9th Oct 2018, 5:43 pm | #31 |
Dekatron
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Re: Dynatron CTV63 problem
Given that you are a TV novice and given that this set is "half mains live chassis", I would advise you to get some "in person" assistance from someone nearby who is suitably knowledgeable. Otherwise, you might make things worse, or get a very nasty electric shock.
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9th Oct 2018, 5:58 pm | #32 |
Heptode
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Re: Dynatron CTV63 problem
Thanks for the advice,
I've had the set unplugged from the mains whilst I've had the back off as I was instructed by the other replies on this thread. I'm not stupid, but there is definitely not a clamp and screw on the set (I've just double checked). Not having seen a diagram of what I was supposed to look for I assumed that the grey plastic flat shim thing WAS the clamp ring, it was loose and moving anyway before I touched it and the deflection coil moved without any stiction whatsoever. So after centering the Vee notch I tightened what I thought was the clamp back up and in my experience some people say screw when they mean turn and vice versa. Ah well. I suppose it can be scrapped for spares. Thank you for your advice anyway, I appreciate it. Richard. |
9th Oct 2018, 6:03 pm | #33 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
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Re: Dynatron CTV63 problem
I wouldn't scrap it, someone on here might have a spare clamp and screw to suite if the one on your scan coils is totally missing, the colour tint on mono can be sorted out.
Lawrence. |
9th Oct 2018, 6:11 pm | #34 |
Heptode
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Re: Dynatron CTV63 problem
Hi Lawrence,
Thanks for the reply. The clamp and screw is indeed missing completely from it. Darn tv! I took a picture of that tint effect using a black and white film just to show the colour of the tint off better, obviously it's there on colour programs too, even when the colour knob on the front is turned right down to minimum it's still there. Regards Richard. |
9th Oct 2018, 6:15 pm | #35 |
Heptode
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Location: Durham, County Durham, UK.
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Re: Dynatron CTV63 problem
No don't scrap it, you probably haven't done any serious damage but you need to get some guidance from someone in your locale before you do.
The colouration of the monochrome picture is probably due to lack of blue signal, you may have caught the beam switch and moved it to the right turning off the blue gun in the CRT. Easy to do if you're working around the scan coils. John. Last edited by jayceebee; 9th Oct 2018 at 6:37 pm. Reason: typo |
9th Oct 2018, 6:24 pm | #36 |
Heptode
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Re: Dynatron CTV63 problem
Ah I see,
Thanks for that explanation. I did notice that all of those things were loose when I touched the grey plastic ring to tighten it. I didn't mess around with them but I may have knocked it out of position when I turned the deflection coil. Now I need to find out if there's anyone in my area who could come and sort it for me as I don't have a car to take it anywhere. D'oh! Thanks John. Richard. |
9th Oct 2018, 6:32 pm | #37 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Dynatron CTV63 problem
Just for information, here's a link to the G11 service manual, it includes the set up instructions for the scan coil assembly adjustables including colour purity:
https://elektrotanya.com/philips_tv_.../download.html Lawrence. |
9th Oct 2018, 6:33 pm | #38 |
Heptode
Join Date: Aug 2018
Location: Rogiet, Monmouthshire, Wales, UK.
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Re: Dynatron CTV63 problem
Thank you Lawrence!!
I shall download it and study it intently. Thanks again Richard. |
9th Oct 2018, 6:54 pm | #39 |
Heptode
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Location: Newport, Gwent, UK.
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Re: Dynatron CTV63 problem
Whatever may or may not be missing from the set is nothing to do with me as I've not done a thing to it. I acquired the set from lucy (testcardgirl) so maybe she can help with its history.
Cheers Neil. |
9th Oct 2018, 7:02 pm | #40 |
Heptode
Join Date: Aug 2018
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Re: Dynatron CTV63 problem
Hi Neil,
I didn't mention you at all in this thread regarding missing parts from the set. You were asking £20 for the tv, which I gave you, I didn't ask the history as I know that in life you get what you pay for. Obviously it needed some work doing to it otherwise you'd have been asking top dollar. I don't mind, even if I do end up scrapping it I'll get my money back Cheers. Richard. |