[TechAssist] Re: Mitsubishi TV CS2723R chas VM1-A-C23R -low contrast, poor color [UPDATE]
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 01 Aug 2005 22:12:54 -0400
Ok, thanks for the message. I have already returned TV to the customer.
Gave her a discount on the repair and she is going to watch it the way
it is until she can afford a new set. I invited her to come to my shop
when she is shopping for a set.
Gary
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
Rich M wrote:
>
> 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.
>>
>>
>>
>>
>>
>>
>>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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