Sony 7 blinks
6 times, Diagnosis: LOW B OCP/OVP (Overcurrent/over
voltage). Possible causes: +5 line is overloaded. (A, B boards), +5
line is shorted. (A, B boards). Symptoms of the problem: No picture.
also found this
MODEL: KDP51WS550, KDP57WS550, KDP65WS550, KP46WT500,
KP46WT510, KP46WT520, KP51WS500, KP51WS510, KP57WS500, KP57WS510,
KP57WS520, KP65WS500, KP65WS510
SUBJECT: Picture gets bright then shuts down. After repairs tech noticed a mark was created on all 3 CRT's.
CAUSE: Found Video Output was defective causing the failure
of the 200v line. 200 volt line has two fuse resistors R7301 (10 ohm
1/4w) on the CB Board. R8225 (1 ohm 1/2w) on the D board. R8208 (0.47
ohm 1/2w) also on the D Board. All three resistors are in series. One
or all 3 could be open. After replacing 2 resistors and Video Output IC
set returned to normal operation. CRTs will need to be changed due to
phosphor damage. On Models KDP-51WS550, KDP-57WS550, KDP-65WS550 CB
Board resistor is R9335 10 ohm 1/4w. D Board resistor is R6509. NOTE:
This resistor may be a jump wire according to the schematic. Models:
KP-51WS520, KP-57WS520 These models have a fuse resistor on all 3 CRT
Boards. CB R9335 10 ohm 1/4w CR R9110 10 ohm 1/4w CG R9211 10 ohm 1/4w
On the D Board R6509 is a jumper wire according to the schematic.
Dec 11, 2007 |
Sony KP-65WS500 65" Rear Projection...