Admiral 24A12 Restoration - part 4

Here it is back together for a test of the picture tube.

Category:

Science & Technology

Tags:

• vintage
• television
• admiral
• 24A12

[chompo7]

hey are you in chicago? wanna teach me how to recap?haha

[bandersentv]

LOL - I was wondering when you'd notice. Yes, I'm in Chicago.

If you can solder, you cap recap. I think the tricky part is knowing what parts to use and where to get them. These old sets usually use 400-1200 volt caps. The material matters too - ceramic, mica, polyester, etc.

I suppose I could help you out some weekend if you're really serious.

[bandersentv]

The aspect ratio is 4:3 which is little tough when using a circular tube. Some sets like the Zenith portholes stretch the picture out to use the entire CRT surface. If you do that, you loose the corners though.

Others use a rectangular mask and sacrifice some of the available CRT face.

This set is a compromise where they left the sides round, but masked the top and bottom. So, yes, you do loose a little in the corners.

[bandersentv]

Short answer - yes.

Long answer - The old NTSC broadcast standard is 262 1/2 lines interlaced for 525 total. Only about 486 hold video info. The horizontal resolution is analog so limited be the bandwidth of the video signal.

[6p1p]

Hi , nice round screen TV.. I'm so envy .

[Maxxarcade]

Nice repair!

Do these sets have the same resolution as one from the 60's or 70's, aside from the edges being cut off? It looks pretty sharp.