[TechAssist] Re: Mitsubishi TV CS2723R chas VM1-A-C23R -low contrast, poor color [UPDATE]
- From: "Rich M" <rmsrepair@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 01 Aug 2005 20:19:27 -0500
Check for open coils on the crt board.I know on some of these older mits
direct view tv's they would get a open coil on the crt bd.
good luck
>From: Gary McCartney <gary@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Mitsubishi TV CS2723R chas VM1-A-C23R -low
contrast, poor color [UPDATE]
>Date: Tue, 26 Jul 2005 23:07:38 -0400
>
>Thanks for the tips. This CRT board desn't have an R680 and there is no
>PIP module either.
>
>I think I have a bad CRT. Turning up the red drive brings in the missing
>red from the image but it causes severe bleeding across the image on the
>screen. Tried replacing the red CRT driver and some caps on the CRT
>board to no avail.
>
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>
>
>
>Gary McCartney
>
>McCartney Electronics
>Guelph Ontario Canada
>Est. 1984
>email: gary (at) number63.ca
>
>
>
>
>
>
>
>Gary McCartney wrote:
>>Mitsubishi TV CS2723R chas VM1-A-C23R -low contrast, poor color
>>
>>This set came in with thin black lines across center of screen and the
>>picture was jumping up and down.
>>
>>I have replaced about 22 caps in vertical, power supply, and jungle that
>>show signs of leakage.
>>
>>Now I have a stable picture and CRT color temperature is not bad, but
>>the contrast is low with sub-cont. pot adjusted to max. and the color is
>>strange. It is like the red in the chroma is very weak. People's faces
>>look pale blue or greenish. Going through the tint range does not
>>correct it.
>>
>>Is this a matter of changing all the caps around the jungle IC? (I found
>>2 that were noticably leaking) or is there a known fault other than that
>>for these problems?
>>
>>Thanks for any help.
>
>
>
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