I have a GE 9T001. I turned it on for almost a minute to see if it worked but it didn't. I know I shouldn't without a variac but I did it. The tubes light up inside and I hear something through the speaker (not static like normal) and I don't see anything on the screen. Nothing started smoking and I didn't hear any popping sounds. I don't think I hurt it any.

I don't have any TV knowledge but I do know how to replace caps & resistors.

Should I replace all of the caps and check the resistors and tubes and then try it again? Or is the CRT possibly bad? I don't want to waste my caps if the CRT is most likely bad. What kind of cheap CRT tester should I buy to test this CRT if I need to?

Thanks for the help.
Kris

If you plan on doing any more TV work you should buy a CRT tester, and a few other things, like a good HV probe and TV signal generator.
The B&K460 series of CRT testers are OK.

Thanks John, I knew before I even posted I was in over my head. I still need to get a variac too. I will just put it up until I get these things.

Kris

These are really simple to recap since it's got a single PC board.
The CRT is very likely bad if it's the OEM tube, seems 9QP4's are contenders with the Predicta for having crummy CRT's/
First thing to do is find someone who can test the tube, any CRT tester can do it but beware, the Heater is an oddball low voltage, 4.3. or 4.7, no low enough to blow if you hook it to 6.3 but still not a good idea. I put 12 volts on the heater of one dud I had, it didn't blow the heater!

I have a B&K 1075 TV Analyzer but have not tested it. Would this work as a TV signal generator?

What is a TV-FM sweep generator used for?

What is a simpson TV Field Strength Meter used for?

I have all of this test equipment but no idea how to use any of it. Most of this stuff has not been touched for many years and probably will atleast need a recap. I kind of feel buried in all of it. I just wish I could get a grasp on something and start to do some real work on this stuff.

I have a Model 400 B&K CRT tester. Will it work good to test this CRT? Is a simple recap all that is needed to make sure it is working correctly?

This is one of the cheapest HV probes I could find online http://www.ebay.com/itm/Triplett-High-V ... 4ab35ae76d Would it work ok?

Sorry for all the questions.

Kris

I think your B&K 1075 will generate all the signal you need to do TV work, but I am not very familiar with it.

A field strength meter is used to test the signal strength from an antenna or cable line.

I will have to do some research on the B&K 400.

I have the Sams on that TV if you need it.

I did a 9T001 a few years ago. When working it actually produced a surprisingly good picture. However, be warned that the CRTs in those are notorious for going bad and they are almost impossible to find replacements for as they were only used in that one model.

See my write-up at:

http://www.antiqueradios.com/forums/vie ... hp?t=91582


-Matthew

Matthew, I will look at your restoration later tonight. Thank you for the link!

John, Thank you for the info on these items. It helps to know a little about what I have. I could use the Sams for this TV but I am not in a rush for it because I still need to get a few things. I will let you know when I am ready for the schematic. Thank you for the help.

Kris

You don't need a truckload of test equipment for your first TV restoration. It would be nice to have some indication that the CRT is good before you spend a lot of time replacing capacitors, which is usually the most time-consuming restoration step.

If you don't have a tester for the other tubes, you can least test their heaters to see if they're duds. Put the ohmmeter probes on the heater pins. Infinite resistance = dud. Resistance of a few ohms means the tube should at least light up, although it may still have weak emission. You can look up tube data sheets here:

http://tubedata.tigahost.com/tubedata/

If your tubes are OK (or semi-OK), then I would start by replacing the electrolytic capacitors. This article has basic info about recapping:

http://antiqueradio.org/recap.htm

Powering up with new electrolytics might give you some signs of life.

Next phase would be to replace small capacitors. This article has some info about replacing caps on PC boards, if that's not obvious to you: http://antiqueradio.org/PhilcoF4626MTelevision.htm .

If you are lucky, then OK tubes + new caps will give you a TV that works, at least somewhat. Matthew's discussion, referenced earlier, has good specific info about this model.

If it still doesn't work, then you can think about debugging specific problems, and at that stage some of the test equipment may come in handy (assuming the equipment works properly).

This TV doesn't have a zillion components, so if you want to think of it as a practice project, you won't be investing a lot of money in parts.

Regards,

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html