Today's Mystery Guest (RCA CTC-4)

[Username1]

Nice looking tv, good luck with it !

So, just for the heck of it.... Exactly why do you take the chassis out...? Not much of a weight savings moving the cabinet.... If all the bolts are there it ain't gunna move... They were surely shipped in one piece from the factory.... When I was a kid I moved floor model sets on a lawn mower bottom with the tv up side down for miles, and never lost anything..... And when I got my zenith roundie it only had one nut in the chassis, I made reasonable sure it wasn't gunna hit the tube, and off I went... So I really don't get all the work takin out the chassis....?

I don't think I would have stood around testing the tube either.... Just load it up and get outa-there before someone else showed up who might have wanted to start a bidding war on it cause he thought he could resell it on ebay for more....

Its very clean inside...... really nice..... Christmas came early fer you....

Did ya get up and pinch yerself today yet....?

I guess its good to have a minivan in the stables..... I got my 9t240 in my '86 prelude, almost didn't fit in the front seat.....

[Phil Nelson]

It is very clean. I was told it never left the owner's living room since new. It has some replaced capacitors underneath and I found a couple of little solder splashes on the floor of the cabinet. I suspect that whatever service it got was given right there in the lady's house.

Originally Posted by Username1

Exactly why do you take the chassis out...?

It's too tall to stand up in my SUV. I know because I transported my (much shorter) CTC-7 upright in that vehicle and it barely cleared the ceiling. There was nobody to load it but skinny old me and the lady running the sale. (She was also baby-sitting a toddler and two dogs, but they were more trouble than help.) I didn't want to chance dropping it or gouging up the front while grunting it face-down into the back.

Steve, the serial number is B8085878.

Phil Nelson

[Steve D.]

Great find Phil. Look forward to reading your comments as you restore the set. Hope you can wake up that CRT.

-Steve D.

[Phil Nelson]

Testing the CRT with my Sencore CR-70 doesn't have me dancing, so far. I measure .7 ohms between pins 1 and 14, so the heaters are not completely open.

Before connecting the universal adapter to the CRT, I set the heater voltage to 6.3. When I connect the UA clips to the pins and turn on the tester, the voltage drops to around 3 volts and the CR-70 makes a high whining noise. If I disconnect a heater pin, the noise goes away and the voltage goes back to normal.

The CRT passes the H-K shorts and G1 shorts test, but the needle doesn't move at all for cutoff test or emission test. This is the same for all three guns.

Suspecting operator error, I double-checked the manual and looked at an old photo of my tester connected to the 21CYP22 in my CTC-7. With exactly the same settings, the tester worked normally and checked the emission, etc., for each gun in that tube. I even hauled the tester out to check a B/W tube, and the tester works normally.

Not sure what is going on here. For an old B/W tube, I'd just let it sit on the tester for a while, to see if it wakes up under normal or slightly elevated filament voltage. I don't see any glowing inside the base, but the base is getting warm.

Phil Nelson

[Steve McVoy]

Thanks for the SN, Phil. Your set is now in the database.