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sony kv 2197 m3

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mel
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May 25, 2011, 9:00 PM

Post #26 of 71 (4322 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

How did you "check" the transistors"? I don't have a schematic for that specific model but a review of similar models shows a 3300 ohm resistor off of the green cathode to the green output transistor (Q702?) with a 15k 2watt resistor (R706?) to the 200v power supply for all three. If the short were in the CRT, the voltage drop would not exist with the CRT board unplugged from the CRT. I suspect that the green out transistor is leaky and creating a voltage drain to the green cathode. Or perhaps the GREEN BACKGROUND and/or GREEN DRIVE pots are misadjusted.

Ron.M
Veteran

May 26, 2011, 1:02 AM

Post #27 of 71 (4316 views)
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Re: [mel] sony kv 2197 m3 [In reply to]	Can't Post

mel;..

GOOD LUCK with translating his replies...
I was going in that same direction till he threw a curve at me...
That's when I threw in the towel....
I'll be watching to see if you get ANY consistent replies...

IF you want the manual , I'll be happy to PM you the link for download...
Let me know...

Quote

Or perhaps the GREEN BACKGROUND and/or GREEN DRIVE pots are misadjusted

That Chassis does NOT have ANY Background OR Drive pots...
The grey scale is done in the Factory Menu...
I was looking at possibly the Transistor or the Demod Jungle IC...

Later...Ron.M.... Cool

...
Veteran & Retired TV technician

chirath
New User

May 26, 2011, 7:14 AM

Post #28 of 71 (4314 views)
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Post deleted by chirath [In reply to]

jts1957
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May 27, 2011, 3:49 AM

Post #29 of 71 (4302 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

Finally. A response that can not be misinterpreted. Wink

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Location: Far, Far Away

chirath
New User

May 27, 2011, 8:49 AM

Post #30 of 71 (4297 views)
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Re: [mel] sony kv 2197 m3 [In reply to]	Can't Post

Mel
as i couldent find the servce manual i have downloaded the similar model and it got 6.8K resistors for KG,KR,KB. so remember it ist 2.2k or 3.3K resistor.
I have tested all the transistors via Ohm meter and all readings were ok. if i replace KG with KR the the KG transistor collector voltage will go 140 and KR become 22V
chirath

chirath
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May 27, 2011, 8:59 AM

Post #31 of 71 (4295 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

In Reply To

also . if i disconnect KB,KR and leve the KG conencted, the picture not comming and retrace lines comes too. if i short the KG to earch very poor colour and not very bright compaire with KB, and KR.
this TV was sent for repair shop some times ago and they have told the Tube is faulty
chirath

Ron.M
Veteran

May 27, 2011, 6:39 PM

Post #32 of 71 (4291 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

Calling all Translators...
Be on the lookout for bad English & discomboobulated sentences...
That is all.....
Back to regularly scheduled programing....

PS;
Someone SERIOUSLY teach this guy how to SPEAK better English &/or how to MAKE sense as to what the HELL he is DOING & talking about....

Later....Ron.M.... Cool

....
Veteran & Retired TV technician

jts1957
Veteran

May 27, 2011, 7:30 PM

Post #33 of 71 (4290 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

Quote

if i replace KG with KR the the KG transistor collector voltage will go 140 and KR become 22V

Bad transistor now at "KR."

-------------------------
Location: Far, Far Away

Ron.M
Veteran

May 27, 2011, 9:13 PM

Post #34 of 71 (4283 views)
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Re: [jts1957] sony kv 2197 m3 [In reply to]	Can't Post

jts1957;.....

Oh...OK....

This part threw me off course...

Quote

I have tested all the transistors via Ohm meter and all readings were ok.

Along with this;....

Quote

if i short the KG to earch very poor colour and not very bright compaire with KB, and KR.

Seems to be contradictory info ....
IF KG is OK , shouldn't it be the same as KR & KB ????
UNLESS the green gun is ALSO bad , but that would contradict earlier statements/info given by "Chirath"...

Now we have this;....

Quote

if i replace KG with KR the the KG transistor collector voltage will go 140 and KR become 22V

Then you said....

In Reply To

Bad transistor now at "KR."

& I tend to agree....

Then he said....

Quote

this TV was sent for repair shop some times ago and they have told the Tube is faulty

Which TOTALLY disagrees with my thinking & apparently yours also....

A Margarita in the morning IS looking to be a REALLLLY GOOOD idea !!!!

Have fun jt.... Wink

....
Nice translation , I think .... Shocked

....

Later...Ron.M.... Cool

....
Veteran & Retired TV technician

chirath
New User

May 28, 2011, 4:11 AM

Post #35 of 71 (4278 views)
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Re: [Ron.M] sony kv 2197 m3 [In reply to]	Can't Post

Ron
English is my second langauge and you seemes to become very smart when you replying to some body. i have seen soem of your posts as well. be professional when you reply on the open forms

Chirath

chirath
New User

May 28, 2011, 4:53 AM

Post #36 of 71 (4277 views)
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Re: [jts1957] sony kv 2197 m3 [In reply to]	Can't Post

Hi JTS
I mean replacing KR with KG is disconnect KG and KR copper paths gose to tube via 3.3K resistor on the CRT PCB
disconnect 2 resistors (KG, KR) and using the wire solder KR 3.3K to to KG input on CRT. same way KG 3.3k resistor out to KR gun.
so if the KG transistor is bad it should not increase the voltage in to 140v coz its now feed to KR gun .so orginally KR was 140v but after chaging the gun to KG it should have same voltage. but now it had dropped to 22v.
i also disconnect KG,KR ad KB feeds and swith on the set. and tested voltages. the KB and KR got 200v i dont know how they got 200v because no input , but KG is 2V.
thank
chirath

jts1957
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May 28, 2011, 11:52 AM

Post #37 of 71 (4275 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

With EVERYTHING is connected as ye old manufacturer intended ...

If all three cathode voltages are near 140v (at the cathode pins on the board) WITH THE CRT BOARD/SOCKET UNPLUGGED and floating - it points to a CRT problem.
If any one cathode voltage is only 22v (at the cathode pins on the board) WITH THE CRT BOARD/SOCKET UNPLUGGED and floating - it points to a Circuitry problem.

-------------------------
Location: Far, Far Away

Ron.M
Veteran

May 28, 2011, 6:36 PM

Post #38 of 71 (4267 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

chirath;.....

English is my FIRST & ONLY language....
IF I were to go to Sri Lanka , I WOULD learn YOUR language in order to get along there & NOT expect YOU to learn MINE...
Since I'm NOT in Sri Lanka & YOU ARE posting in MY country , I EXPECT YOU to LEARN MY language...
IF you don't learn MY language OR REFUSE to , then expect problems explaining things to "Foreigners"...

Quote

be professional when you reply on the open forms

I am VERRRY professional to those that understand MY language , that being ENGLISH !!!....PERIOD !!!!

Gibberish gets you gibberish....

Jts....Your explanation is EXCELLENT !!!
I doubt he will understand it...
Good Luck !!!!... Wink

...

Later...Ron.M.... Cool

....
Veteran & Retired TV technician

(This post was edited by Ron.M on May 28, 2011, 6:38 PM)

mel
Veteran

May 30, 2011, 3:01 AM

Post #39 of 71 (4252 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

Testing transistors with an ohmeter will not always provide an accurate answer. It is not that difficult nor expensive to just replace it. I'm still not sure if you told us what the KG voltage is with the CRT board unplugged from the CRT.

chirath
New User

May 30, 2011, 1:16 PM

Post #40 of 71 (4248 views)
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Re: [mel] sony kv 2197 m3 [In reply to]	Can't Post

Yes Mel, I have given this TV to my friend and he is using this. later this week i'll visit his palace and get the required information.
Thank you for you concern
Chirath

jts1957
Veteran

May 30, 2011, 1:18 PM

Post #41 of 71 (4247 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

Since he lives in a palace, he should be able to afford NEW set! Crazy

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Location: Far, Far Away

chirath
New User

May 30, 2011, 3:31 PM

Post #42 of 71 (4242 views)
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Re: [jts1957] sony kv 2197 m3 [In reply to]	Can't Post

In Reply To

Since he lives in a palace, he should be able to afford NEW set! Crazy

this word should correct as place not palace
chirtah

jts1957
Veteran

May 30, 2011, 4:25 PM

Post #43 of 71 (4239 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

I've got to go with what's presented on the screen in front of me.

I'm in full control of MY Computer's Keyboard (most of the time). Wink

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Location: Far, Far Away

mel
Veteran

May 31, 2011, 2:46 AM

Post #44 of 71 (4232 views)
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Re: [jts1957] sony kv 2197 m3 [In reply to]	Can't Post

I made a mistake once. I thought that I had made a mistake and really hadn't.

chirath
New User

May 31, 2011, 2:17 PM

Post #45 of 71 (4227 views)
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Re: [mel] sony kv 2197 m3 [In reply to]	Can't Post

Hi mel
I have checked the voltages as below
Socket connected - KB-125V,KR-102V and KG-8.5V
Socket disconnected - all are 193V
Chirath

Ron.M
Veteran

May 31, 2011, 6:37 PM

Post #46 of 71 (4224 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

FINALLY !!!

BAD PICTURE TUBE....GOODBYE.....

Later..Ron.M.... Cool

...
Veteran & Retired TV technician

chirath
New User

Jun 1, 2011, 3:34 PM

Post #47 of 71 (4198 views)
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Re: [Ron.M] sony kv 2197 m3 [In reply to]	Can't Post

Yes it is.
Is there any way to fix this issue? i have seen some method call re-generate CRT..etc.
chirath

jts1957
Veteran

Jun 1, 2011, 5:40 PM

Post #48 of 71 (4194 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

http://cgi.ebay.com/...former-/150546845743

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Location: Far, Far Away

mel
Veteran

Jun 1, 2011, 9:09 PM

Post #49 of 71 (4190 views)
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Re: [chirath] sony kv 2197 m3 [In reply to]	Can't Post

My BK CRT tester has a clear shorts function but I found that it rarely worked when used.

Ron.M
Veteran

Jun 2, 2011, 3:08 AM

Post #50 of 71 (4183 views)
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Re: [mel] sony kv 2197 m3 [In reply to]	Can't Post

mel;.....

I tossed my B&K CRT Checker/Restorer in the trash decades ago....
Was a P.O.S...
Have a much better unit now.... Wink

....

Later....Ron.M.... Cool

...
Veteran & Retired TV technician

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