[TechAssist] Re: Sony KV-27XBR36 (SY-CTV20-T) Overscanned Picture, with low b+ supply voltage.FIXED!
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 25 Apr 2005 16:41:44 -0400
FIXED!
Soldered the power supply completely solved the problem. Some one had
soldered the IC651 previous, but tapping and moving components in that
section restored the B+ to 135 volts and straightened out the picture.
thanks Eric and Gary for the help,
Bruce.
----- Original Message -----
From: "Eric Manuel" <tvman@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, April 23, 2005 11:19 AM
Subject: [TechAssist] Re: Sony KV-27XBR36 (SY-CTV20-T) Overscanned Picture,
with low b+ supply voltage.
> Check this
> Sony KV27XBR36 Width varies then shutdown Resolder IC651 on G
> board(power supply)
>
>
>
>
> Eric
> E M Electronics
> Deer Lake Nfld
> Canada
> tvman@xxxxxxxxxxxxxxx
>
> Bruce Tiedeman wrote:
>> The picture deflection is over scanned and the power supply has low B+
>> voltage. Looks like and open capacitor some where.
>>
>> The picture is full ,Overscanned top and bottom and sides. The collector
>> B+
>> is 108 volts and 871 PPVolts. I checked the power supply caps OK. I
>> removed
>> the supply and checked the B+ is low with it removed from chassis. You
>> would
>> think the deflection would be reduced with low B+ . Before I check the
>> caps
>> in the horiz section thought I would see if any one has seen this before.
>> thanks
>> Bruce.
>>
>> B&T Electronics
>> 139 Margaret St
>> Sarnia Ontario
>> Canada
>> N7T 2Y3
>> 519 344 1850
>>
>>
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