Thread: Baird Garrick
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Old 1st Aug 2021, 10:53 am   #107
beery
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Join Date: Jun 2006
Location: Ware, Hertfordshire, UK.
Posts: 988
Default Re: Baird Garrick

Hi all,
Finally, the Baird Garrick is back together after 3 years!

There are still some niggling issues:-

1. The picture is rotated slightly clockwise. This is a real pain because unlike in other sets where the scan coils can easily be rotated, in this set it requires removal of the chassis to power it up on the bench. The scanning gantry is screwed to a semicircular slot accessible from the front of the chassis.

2. The CRT is not secured. I had hoped that when the chassis was pushed back into place that the rubber mask would butt up against the safety glass. In fact there is a 1/4" gap, which is probably due to the fact that these sets were made with either a Mullard CRT (as in my set) or a Mazda CRT. If you recall, the CRT was originally secured by sewing braided wire through the rubber mask and attaching it to the wooden CRT guide behind it. This was not a good idea as it caused the mask to distort. I had the idea of securing the CRT via the neck, TV24 style, but as the mask does not push up against the glass, this can hardly be considered safely secured. Also there is nothing to stop the mask sliding off the front of the CRT.
What I propose therefore is to make an aluminium securing band the clamp the mask to the rim of the CRT and then thread braided wire around the clamping band in to the wooden CRT guide in a similar way to the original arrangement. The neck clamp can then be dispensed with.

3. The control shafts for brightness and contrast are bent. The extension shafts are made from 1/4" welding rod, which are seized into the shaft couplers. I think penetrating oil and heat will be required to free them for straightening.

4. More width would be nice. There is sufficient width to fill the mask using the Hedhog test card, but the output from my PC is slightly underscanned. It is a minor issue, but another 50 turns on the secondary of the LOPT would solve it.

Other than that the set is OK and since putting it back together I have enjoyed watching Casablanca on it.

The first photo shows the front view of the completed set.

The second photo shows test card C, slightly rotated and a shadow on the right hand side, this was because the CRT had slid forward slightly.

The third photo shows a man getting a headache from the wonky picture.

By the fourth photo he had decided to fly off to find a better TV set. Can you guess what serial these shots are from?

The fifth photo shows how the Hedhog test card looks with the CRT relocated, which has removed the shadow, but reduced the width.

Nearly there...

Cheers
Andy
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Last edited by beery; 1st Aug 2021 at 10:55 am. Reason: Grammar
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