k7500 quick question

GMZombie

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ok so im fixing a chasis for a buddy who recently put a new flyback on the monitor. the old flyback was bad so he replaced it but when he hooked it up he forgot to plug in the remote control board. now it just ticks. im thinking he either blew the hot or VR. im thinking the hot but just wanted an opinion. im getting the chassis tomorrow.
 
Ticking means the HOT went bad. Not uncommon when the horizontal oscillator gets over-stressed from no remote board connected.

Of further concern will be whether he:

a) wrapped the black wire back around the flyback - and did so in the right direction.

b) remembered to send you the little transistor that is mounted to the frame. The chassis will still work without it, but the picture size will be off horizontally, and you won't be able to adjust it. (Note: Some models actually mount this to the left of the HOT but most have it mounted off the chassis and hooked via a 3-pin connector.)
 
replaced the hot still ticking. seems to be coming from the flyback?? but from what i was told flyback was replaced just before i got it and then i got it to fix cause it didn't work. person im fixing it for is getting me the old flyback tomorrow. reason it was changed is it was too blurry and couldn't change with screw on back of flyback.
 
inspect the soldering work very carefully. I had a K7500 that I capped once (was my first one) where when I was trying to desolder a cap, I started desoldering parts around it and wound up hitting one of the transformers in the power supply section and forgot to solder it again (whoops).

that produced a fast ticking. with that desoldered, it couldn't make high voltage, which is my best guess. luckily after soldering it again, it magically worked.

sometimes with this hobby it's very easy to go after the more difficult and complicated stuff and ignore the very simple solution that sits right in front of you.

also check over the flyback solder joints real well. these chassis are very prone to easy damage of the solder pads, so just make sure they're all intact and are making contact with the traces they're supposed to connect to.
 
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