Sony kp-57ws500 6-blink error

Gribbett · 11-04-2009, 05:30 PM

Hi all,
I recently picked up a kp-57ws500 TV someone was throwing away, it had convergence issues and was supposed to be an easy fix. I replaced the convergence IC's, and the TV worked like a charm... for a while.
Soon, I started to hear HV arcing coming from inside the unit. I couldn't find the source of the problem, and it didn't seem to be damaging the TV, so I let it continue for a while.
Eventually, the arcing started to happen frequently enough for me to pinpoint the problem. It turns out I hadn't resealed the anode cup on the tubes properly, and it was arcing to the chassis. I resealed the cup with a very generous amount of caulk, and the TV again worked like a charm... for a while.

After about a month of the TV working perfectly, I turned on the TV and heard a snap, like the HV arcs from before. This time though, the TV went dead. Now if I go to turn it on, I get a 6-blink error, which the service manual says means "low B OCP/OVP (overcurrent/overvoltage)". It suggests that the +5v line on the A or B board is shorted or overloaded.
Anyone have any suggestions on where I should go from here, or am I S.O.L. on this one?

SJ44 · 11-04-2009, 10:22 PM

Check the different B+ lines for over-voltage, due to defective regulation; which can cause the High Voltage to be too high.

11-04-2009, 05:30 PM	#1
Gribbett What is HD? Join Date: Nov 2009 Posts: 1	Sony kp-57ws500 6-blink error Hi all, I recently picked up a kp-57ws500 TV someone was throwing away, it had convergence issues and was supposed to be an easy fix. I replaced the convergence IC's, and the TV worked like a charm... for a while. Soon, I started to hear HV arcing coming from inside the unit. I couldn't find the source of the problem, and it didn't seem to be damaging the TV, so I let it continue for a while. Eventually, the arcing started to happen frequently enough for me to pinpoint the problem. It turns out I hadn't resealed the anode cup on the tubes properly, and it was arcing to the chassis. I resealed the cup with a very generous amount of caulk, and the TV again worked like a charm... for a while. After about a month of the TV working perfectly, I turned on the TV and heard a snap, like the HV arcs from before. This time though, the TV went dead. Now if I go to turn it on, I get a 6-blink error, which the service manual says means "low B OCP/OVP (overcurrent/overvoltage)". It suggests that the +5v line on the A or B board is shorted or overloaded. Anyone have any suggestions on where I should go from here, or am I S.O.L. on this one?

11-04-2009, 10:22 PM	#2
SJ44 Retired video tech Join Date: Jul 2008 Location: Quebec, Canada Posts: 185	Check the different B+ lines for over-voltage, due to defective regulation; which can cause the High Voltage to be too high. __________________ Sony SXRD KDS-R60XBR1, Yamaha RX-V357, Bell 6100