6 minutes.....and BANG!

ELutz

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Donor 2011
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I thought I'd post this because it might help someone down the road. I capped and replaced the flyback on a 19K7000 series. It was actually working, but the picture looked like crap. It had original caps, and hairline cracks were starting to form around the focus & screen pots. It ran for approximately six minutes.......and then the flyback split itself around the middle. Fuse was still good, the HOT tested good, all the polypropylene caps in the horizontal circuit tested good. I installed a new flyback, and got ready to fire it back up......something stopped me, and I decided to check the new flyback with my "ringer". The impedance didn't look right, so I pulled the chassis and dug some more (I didn't want to kill another new flyback). After a bit of digging, I found D13 was a dead short. I replaced it and couldn't find anything else wrong. Checked the flyback with my ringer again, and this time the impedance looked good. Fired it up and all was good.

Edward
 

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I thought I'd post this because it might help someone down the road. I capped and replaced the flyback on a 19K7000 series. It was actually working, but the picture looked like crap. It had original caps, and hairline cracks were starting to form around the focus & screen pots. It ran for approximately six minutes.......and then the flyback split itself around the middle. Fuse was still good, the HOT tested good, all the polypropylene caps in the horizontal circuit tested good. I installed a new flyback, and got ready to fire it back up......something stopped me, and I decided to check the new flyback with my "ringer". The impedance didn't look right, so I pulled the chassis and dug some more (I didn't want to kill another new flyback). After a bit of digging, I found D13 was a dead short. I replaced it and couldn't find anything else wrong. Checked the flyback with my ringer again, and this time the impedance looked good. Fired it up and all was good.

Edward

Ringer? Pics or it didn't happen.... in other words, WTH is a "Ringer"? :D
 
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