[TechAssist] Re: Sony KV-27XBR36 (SY-CTV20-T) Overscanned Picture, with low b+ supply voltage.
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 23 Apr 2005 11:47:13 -0400
Bruce, found a couple tips for various XBR sets for width problems
KV27XBR96S Excessive Width Q506 872901100 (2SK1916) & Q513
872914096 (2SD774-34)
KV27XBR35 width excessive bowed pix (pincushion replaced Q516 in pin
circuit)
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
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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