RCA-Roundie One Owner

[yagosaga]

Hi Don,

do you need assistance for reviving the set?

- Eckhard

[refill233]

Sure didn't know how rare this set was until i got all this great info. I looked the set over some yesterday and from what i've seen don't think i want to attempt to restore it. Worked in a tv shop since the mid 70's and some things on this set i haven't seen before. Don't think they were ever one in the shop. I know there is a step by step setup which i have no idea how . Looks to be one of 20 that is still around (Thanks Steve McVoy for that info) and i wouldn't want to take the chance of doing something wrong. Need to get the chassis number and such today and am going to check the flyback out . The chassis is very nice except for some dust. The lady was a little forgetful but she thought the reason they quit watching it was because the picture got fuzzy.
Eckhard,thank you very much for all the assistance that you have already given me on this set . Been to your site and you are sure hi tech. Don't think i could find anyone more skilled than you to help me out on it. As i said before i'm not in color sets right now and don't think i want to attempt it. Now the question is to sell it or get it restored ?

[yagosaga]

Originally Posted by refill233

As i said before i'm not in color sets right now and don't think i want to attempt it. Now the question is to sell it or get it restored ?

Please be patient. This is a great opportunity to learn color television. You have nothing to loose. You only can win! The prices for CTC-4s are very low in my opinion. I have seen CTC4s on the 'bay gone for $500 and up to $1,300. But the real value is much higher. So selling this set would be a bad deal.

Take your time. Study the set. Look at the chassis. Look into the schematics. Is there something significant? Melted wax or bad caps? You have all the time of the world. This set can wait. Learn, what you don't understand. The parts, and tubes and the circuits - a lot of is very strange at the first sight. But you will see that you get a feeling for it. And the day will come when you say, I will test it.

Remove F104, the fuse for the 380Volts D.C.. Take a variac (with 500 watts) and turn it slowly on. What will happen with the tubes? Do they light up?

Unsolder F102 and F103. This will cut the filament currents. Insert an Amperemeter with A.C. selection at the socket for F104. Turn the variac slowly on. What are the meter readings? Keep it below 100mA. The electrolytic caps have to be reformed:

http://www.vcomp.co.uk/tech_tips/ref...eform_caps.htm

When this is done, you can go through the schematics part for part.

Check the power supply, the horizontal output unit and so on. Don't replace every cap. Look for their functions in the schematics. Many caps are low voltage rated or coupled with resistors. These are not critical.

And you also will see the day when there is a raster on the screen or even a colorful picture. These are moments which you never will forget!

But remember: you have time. The only reason to sell this set might be if you absolutely have no room for it.

- Eckhard