i own a 61 inch rear projection sony tv, the model number is kp-61hs10, this tv was made in march 2000, it has worked great for years, with only a convergence problem which i fixed back in mid 2009, the crt tubes have never been replaced, they are running perfect..
First off, this tv doesnt have a fan, i have heard that most sony rear projection tvs have a fan to cool the tubes, whether its true or not i dont know.
But the problem i am having, is that yesterday, i was watching tv when i heard a loud pop, which sounded like a spark, and the screen distorting, it happened 3 times before i got over to it to unplug it.
After removing the back panel, and the front panel, i couldnt find any obvious problems, and no burn marks, SO i plugged the tv in, and powered it up, and sure enough it starting sparking agian, on the blue CRT tube, it at first looked to be coming from the deflection coil, so i pulled out the crt tube, removed the deflection coil, unsoldered the circuit board from the coil, dissassembled the coil and inspected it, no broken enamled wire, no wire missing enamel, no burn marks or anything..
So i reassembled the tube and reinstalled it into the tv, while installing it i noticed that the anode cap on the tube wasnt fully glued to the tube, but i could see that the anode was properly connected, so i left it alone..
after installing the crt tube, reconnecting all the cables, i turned on the tv, then went into the service menu, wrote down the current alignment settings, and then adjusted the alignment settings to fix the convergence, perfect picture, no popping, at first...
then about ten minutes of watching tv, it poped again, i still had the front panel off the tv, and i saw it sparking from above the deflection coil, near the anode cap..
so i decided to try and use some electrical tape and tape down the anode cap..
i turned the tv back on, it is on right now, it only popped once, about 6 minutes ago..
when it was first popping i put my ear to the tv and i could hear a buzzing getting louder before the pop, like a static electricity build up before the charge jumps to a ground, so i inspected the metal bars the tubes mount on, there was a black mark, but not a burn like i would expect from the discharge of a flyback..
but the pop did sound like the pop from dischargeing the flyback on a single tube crt tv (like a 8 inch or 12 inch crt)
I went into the error menu list, and here is the readout
2: +B OCP 0
3: +B OVP 0
4: V STOP 0
5: AKB 3
6: H STOP 0
7: HV 0
8 AUDIO 0
9: WDT 0
SO AKB is a error code, with three ocerences, what AKB means, i have no clue
So even though it hasnt poped yet, but it did pop after i first put the electrical tape on it, what should i do, and what is the cause?
First off, this tv doesnt have a fan, i have heard that most sony rear projection tvs have a fan to cool the tubes, whether its true or not i dont know.
But the problem i am having, is that yesterday, i was watching tv when i heard a loud pop, which sounded like a spark, and the screen distorting, it happened 3 times before i got over to it to unplug it.
After removing the back panel, and the front panel, i couldnt find any obvious problems, and no burn marks, SO i plugged the tv in, and powered it up, and sure enough it starting sparking agian, on the blue CRT tube, it at first looked to be coming from the deflection coil, so i pulled out the crt tube, removed the deflection coil, unsoldered the circuit board from the coil, dissassembled the coil and inspected it, no broken enamled wire, no wire missing enamel, no burn marks or anything..
So i reassembled the tube and reinstalled it into the tv, while installing it i noticed that the anode cap on the tube wasnt fully glued to the tube, but i could see that the anode was properly connected, so i left it alone..
after installing the crt tube, reconnecting all the cables, i turned on the tv, then went into the service menu, wrote down the current alignment settings, and then adjusted the alignment settings to fix the convergence, perfect picture, no popping, at first...
then about ten minutes of watching tv, it poped again, i still had the front panel off the tv, and i saw it sparking from above the deflection coil, near the anode cap..
so i decided to try and use some electrical tape and tape down the anode cap..
i turned the tv back on, it is on right now, it only popped once, about 6 minutes ago..
when it was first popping i put my ear to the tv and i could hear a buzzing getting louder before the pop, like a static electricity build up before the charge jumps to a ground, so i inspected the metal bars the tubes mount on, there was a black mark, but not a burn like i would expect from the discharge of a flyback..
but the pop did sound like the pop from dischargeing the flyback on a single tube crt tv (like a 8 inch or 12 inch crt)
I went into the error menu list, and here is the readout
2: +B OCP 0
3: +B OVP 0
4: V STOP 0
5: AKB 3
6: H STOP 0
7: HV 0
8 AUDIO 0
9: WDT 0
SO AKB is a error code, with three ocerences, what AKB means, i have no clue
So even though it hasnt poped yet, but it did pop after i first put the electrical tape on it, what should i do, and what is the cause?