Re: 5 Blinks on Sony KV-32fs120 - "KV32FS120.pdf" (0/1) 6.9 MBytes yEnc

On Sat, 16 May 2009 20:56:58 -0400, BushPilot <none@xxxxxxxxxxx> put
finger to keyboard and composed:

On Sun, 17 May 2009 10:27:44 +1000, Franc Zabkar
<fzabkar@xxxxxxxxxxxxxxxxx> wrote:

On Sat, 16 May 2009 19:35:05 -0400, BushPilot <none@xxxxxxxxxxx> put
finger to keyboard and composed:

On Sun, 17 May 2009 09:00:57 +1000, Franc Zabkar
<fzabkar@xxxxxxxxxxxxxxxxx> wrote:

On Sat, 16 May 2009 00:45:48 -0400, What_Me? <none@xxxxxxxxxxx> put
finger to keyboard and composed:

I've attached a copy of the service manual.

Nobody (?) can see it. This is not a binary group.

Better to upload your manual to a file sharing site and post a link to
it.

- Franc Zabkar

http://www.schematicsforfree.com/archive/file/Sony/Video/KV32FS120.pdf

Pages 8 & 9 suggest that you have an IK (AKB) fault.

IK = cathode current (?)
AKB = automatic kinescope bias (automatic colour/white balance)

The manual points to a possibly faulty M board, or misadjusted G2
setting. If yours is an old set, then I'd suspect a tired CRT.

"If the RGB levels do not balance within 2 seconds after the power is
turned on, this error will be detected by IC001 (M Board). TV will
stay on, but there will be no picture."

I'd be looking at the C board on the CRT neck, specifically IC702.
IC702 provides IK information to the M board.

Here is the data*** for IC702 (TDA6108JF):
http://www.datasheetcatalog.org/datasheet/philips/TDA6108JF.pdf

- Franc Zabkar

Thank you Frank for you advice. I will examine the IC702 data*** you
mentioned. I don't know if my voltage reading were of any use. it
seems bizarre that the rectifier right off the mains input would not
output higher voltage coming right off 123v.

I'll keep you posted. Thanks again.

It appears that the uP is switching your TV off in response to a fault
condition. However, the documentation states that an IK (AKB) fault
should allow the TV to remain on, but with no raster. <shrug>

I'd also check for a short on the B+ (135V) supply rail.

- Franc Zabkar
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