New deal on JVC crt projection set. Voltage too high?
 

Previously would not power on. Replaced board. Got flashing blue led. Needed convergence chips. Gave set to a friend who replaced chips. Found open resistor and replaced. Now he seems to be getting overcurrent on the b+. Led flashes over and over rapidly. Could be a bad gun or bridge? Any ideas? This is a 1080i set with crts. Model 56P575.