Sony TV-115 12 inch B/W TV - Videokarma.org TV - Video

centralradio · #1 06-10-2020, 02:37 PM

Hi all.I have a Sony TV-115 TV here .Does anybody have a schematic for it..

https://www.radiomuseum.org/r/sony_tv_115tv11.html
Thanks in advance........

CrtsRtubular · #2 06-10-2020, 08:53 PM

I have the same set, but no schematic....

zeno · #3 06-11-2020, 04:46 PM

Try to find a free one first. If you cant I can sell you a mint SAMS manual.
PM me if interested.

73 Zeno

LFOD !

centralradio · #4 06-11-2020, 08:37 PM

Hi Zeno.Thanks again for chiming in with your help.So far no find online or in my paper version archive .Sorry no offense to you I prefer to get a free PDF copy of it.If available .The same with the Panasonic pop up TV set we've mentioned in the other thread.Low on cash with all whats going on in the world today.

In the meantime .Yesterday I poked around in the Sony set.I'm questioning the CRT since its dim .low brightness .heater is lit .The other question is why there is only 3 wires going to the CRT socket PC board in which is very odd to see.Heater B+ which read 12V and probably the cathode. That was reading low volts. What happen to the grid wires? Didn't see any broken wires from it laying around on the PC board.I think somebody else was in this set and screwed around with it before I cracked it open.After seeing that going on .Maybe the CRT is OK....

Quote:

Originally Posted by zeno

Try to find a free one first. If you cant I can sell you a mint SAMS manual.
PM me if interested.

73 Zeno

LFOD !

centralradio · #5 06-11-2020, 08:41 PM

Hi CrtsRtubular ..Do you recall what the CRT socket wiring in your set is like..

Quote:

Originally Posted by CrtsRtubular

I have the same set, but no schematic....

CrtsRtubular · #6 06-11-2020, 09:34 PM

Quote:

Hi CrtsRtubular ..Do you recall what the CRT socket wiring in your set is like..

Quote:
Originally Posted by CrtsRtubular View Post
I have the same set, but no schematic....

I don't but I suppose I could open it and take a picture

centralradio · #7 06-12-2020, 01:01 AM

Hi there.. Yes if you can do that and thanks if you dont mind doing so...

BTW whats wrong with your set and we can compare the issues with both sets..

Quote:

Originally Posted by CrtsRtubular

I don't but I suppose I could open it and take a picture

zeno · #8 06-12-2020, 10:37 AM

CRT pins
Pin 3 Hi to GND
pin 4 H2 to 12V
pin 2 cathode +- 42 V the lower the brighter.
pins 1 & 5 G1 through 1.5 meg to GND ( R514 ) 0 VDC
pins 6 & 7 G2 to GND
HV 11KV

Have manual out for the Panny also if you need info on it.

73 Zeno

LFOD !

Quote:

Originally Posted by centralradio

Hi Zeno.Thanks again for chiming in with your help.So far no find online or in my paper version archive .Sorry no offense to you I prefer to get a free PDF copy of it.If available .The same with the Panasonic pop up TV set we've mentioned in the other thread.Low on cash with all whats going on in the world today.

In the meantime .Yesterday I poked around in the Sony set.I'm questioning the CRT since its dim .low brightness .heater is lit .The other question is why there is only 3 wires going to the CRT socket PC board in which is very odd to see.Heater B+ which read 12V and probably the cathode. That was reading low volts. What happen to the grid wires? Didn't see any broken wires from it laying around on the PC board.I think somebody else was in this set and screwed around with it before I cracked it open.After seeing that going on .Maybe the CRT is OK....

CrtsRtubular · #9 06-12-2020, 03:04 PM

Oh, Nothing is wrong with my set, It operates fine. I never had to to do any work to it

centralradio · #10 06-12-2020, 04:21 PM

Thanks Zeno and CrtsRtubular .The 3 wire hook up is what it is.No need to pop your set open CrtsRtubular since Zeno confirmed its only 3 wire system.OK 12 volt heater .It looks like a video output problem since since the voltage was way lower then -42 Volts..I'll look at it over the weekend.