Hello,
I am trying to fix a Sony KP-65WV600 that was donated to our church.
It worked fine when delivered (we only had it on for about 20 minutes) then a few days ago when it was turned on it worked OK then the picture went out and the standby light now blinks 4 times, pauses, 4 times etc.
I see from this site that 4 blinks means to check IC1509 and Q1505.
After downloading the service manual (thanks Techlore) I can find Q1505 on the U board schematic but I cannot locate IC1509 ...I thought it would be on the same board.