|
|
|
#16
12-21-2009, 12:33 PM
|
||||
|
||||
|
I did check the service switch, it checked good. The only thing I am curious about, is that the yoke was real loose, like someone took it off, and hastily put it back on. I hope they didn't damage it. Ill check those transistors, too. Thanks for the advice, all of you, a
 s this is strange territory for me.
|
|
#17
12-22-2009, 12:04 PM
|
||||
|
||||
|
Quote:
 Charles
__________________
Collecting & restoring TVs in Los Angeles since age 10
|
|
#18
12-22-2009, 01:07 PM
|
||||
|
||||
|
If I remember right, the SCR's are high voltage. I remember something about a vertical coupling electrolytic opening up and killing vertical. I'll dig out a sams and take a look. Those were fun sets!
|
|
#19
12-22-2009, 01:24 PM
|
||||
|
||||
|
Like Doug said, check the setup switch first.
After that, check for voltage on Q101. It's fed from the 82 volt power supply. There is a 39 ohm, 5 watt resistor that may be open. If it is, suspect Q101. There are 4 other transistors in the vertical. Let me know if you have the collector voltage and I'll go further if need be.
|
|
#20
12-23-2009, 02:00 PM
|
||||
|
||||
|
Thanks for the advice, everyone. Going to tear into the set this weekend, will let you guys know what I find! I like the layout of the chassis, all of the components look well spread out, and easily accessible.
|
| Audiokarma |
|
#21
12-25-2009, 09:17 PM
|
||||
|
||||
|
Oh.. My bad, I meant transistor. Be sure to check solder connections off the vertical transformer. Especially on the terminal strips.. Guess it could be a lytic too. I know it's a different beast but I had a ctc-17 w/ no vertical deflection, turned out to be a bad connection on the terminal strip. Those ceramic heat resistors put off a crapload of heat and the wire coating seems corrosive when it gets hot.
__________________
Honey, turn on the tv.. I'm cold!
|
|
#22
12-26-2009, 04:53 PM
|
||||
|
||||
|
ITS ALIVE!!! I found the 3564 Vertical output transistor defective. It cross referenced to an NTE-162, so off to Fry's I went, and found one! The heat sink grease on the old one was completely dried up and flaking off. so, after I swapped out the transistor with new grease, I turned the TV on, and it came to life. All of the controls needed adjustment of some sort, and the tuner needs a good cleaning, but it works. My next order of business on it is to replace the cheesy on-off switch some one rigged in there, in place of the old one. Another thing about this reciever, I was actually amazed at how tiny the flyback transformer was comapred to the other sets.
|
|
#23
12-26-2009, 05:23 PM
|
||||
|
||||
|
Nice job! I've always liked that style of RCA sets with the pull-out control panel drawer. Good to see another one of them alive.
|
|
#24
12-26-2009, 06:07 PM
|
||||
|
||||
|
Glad you got it going! The reason that flyback is smaller is because that transformer only puts out about 6 or 7 KV, which is then sent to the quadrupler, where the voltage is ramped up to around 25-28 KV.
|
|
#25
12-27-2009, 01:25 AM
|
||||
|
||||
|
Way cool! That set looks like it's producing a great picture too!! Well done
__________________
Honey, turn on the tv.. I'm cold!
|
| Audiokarma |
|
#26
12-29-2009, 08:09 PM
|
|||
|
|||
|
Check the setup switch FIRST as it could also be dirty from setting or just plain set in the service position. The 44 was the second SS generation from a CTC40 and was ALL SS to include the HV department. It is a scarce set and certainly worth keeping.
__________________
julian
|
|
#27
01-05-2010, 08:16 PM
|
|||
|
|||
|
Quote:
I removed the metal cover to the fly cage on my ctc47 and it cool down quite a bit. If you have kids, pets, etc. Make sure you put the back cover on the set before you put it in service. Also I would check for bad caps and connections in the vertical circuit if the vertical output transistor goes defective again. Cool set.
|
 |
|
|
Linear Mode
