Should I start on my predicta?

[zenithfan1]

Well, it couldn't hurt anything either. I'd go ahead and fix it up. The CRT sounds like it's good enough to produce a picture. The dimness could be the chassis' fault too. At least if the tube is bad, that would be the only thing left to fix instead of the whole thing needing work.

[josephdaniel]

Will A Sencore cr 161 test the origional 2V tube? I am mostly just looking for a excuse to get this one thats been for sale for 30.00 dollars for a few weeks now

[marty59]

Originally Posted by josephdaniel

Will A Sencore cr 161 test the origional 2V tube? I am mostly just looking for a excuse to get this one thats been for sale for 30.00 dollars for a few weeks now

I like my 161 and it did good on the clean function with my Predicta. When on "clean" the filament voltage stays the same so that's a safe thing for that tube!

[6GH8cowboy]

Just food for thought. Before getting all wraped up about testing the crt it might be worth removing the front cover and cleaning the crt. This one I worked on had a fairly bright line before the vertical got fixed and a weak but useable raster afterwards. After the rest of the resto, I removed the front to get the HV connected to the crt I discovered the face of the tube was BLACK WITH DIRT? SMOKE? WHATEVER. After cleaning the picture looks like new crt. Might be worth a look see.

[6GH8cowboy]

I found on this princess that the pcb could be carefully tilted up by

1. unsoldering the Linierity control wire
2. removing the width control carefully leaving the wires intact
3. unbolting the crt connector flange fron the chassis
4. unbolting the noise limit pot bracket
5. unsoldering the chassis ground tabs
6. bending a couple chassis tangs holding the board down

At this point the pcb can be tilted up from the rear because most of the wiring runs to the front of the chassis
There will be wires to be moved out of the way at the sides and its good to take out the larger taller tubes.

Now you can replace the caps, check and replace resistors and solder the pins on all tube sockets.

Clean and carefull replacement of components will pay dividends later.
Good luck. Go for it.

[josephdaniel]

Originally Posted by 6GH8cowboy

Just food for thought. Before getting all wraped up about testing the crt it might be worth removing the front cover and cleaning the crt. This one I worked on had a fairly bright line before the vertical got fixed and a weak but useable raster afterwards. After the rest of the resto, I removed the front to get the HV connected to the crt I discovered the face of the tube was BLACK WITH DIRT? SMOKE? WHATEVER. After cleaning the picture looks like new crt. Might be worth a look see.

I already tried this but I think its lucky that I get anything on the screen at all considering that there are still paper caps on the board.

I was going to do that but the wire used here is solid core so I fear that it may break if I flex it too much. and if I remove the whole board it gives me a chance to check everything very thoroughly.