Flybacks and when they die

Nerbflong

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Christmas eve family party, the flyback on one of my Rushes died. It made a rather fun, loud sound before finally giving up the ghost. Scared the heck out of a few people lol.

The question I have is, when flybacks go, do they generally take other components with them or do the flybacks die gracefully?

I did know the flyback was going. The picture at first would be out of focus and later be quite sharp. That day the picture was darker than normal too. I had hoped it'd make it through the party. :(
 
they usually go with a fight unfortunately. popped traces, blow the hot, blow the voltage regulator, short out caps, etc. Just depends on the model/brand of monitor and luck..


WHile i have gotten lucky before and had just a bad flyback, thats usually not the case.

If its got a neotec, you might get lucky with a hot and a new fly.
 
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That's kind of what I figured. Bah.

Now to find someone that fixes the Neotec 27's. I don't want to deal with it.. I've had Chad do them previously but waiting 6 weeks to get a monitor back is painful :(


Anyone else that works on these things?
 
mod might, dokert might, chris25810 might..

i would, but right now i dont have a med res game to test on. I have a working 27" neotec monitor but the chassis is rigged to hell man, its something i would run but unfortunately not something i would sell
 
can't you generally tell when they're fizzling with the random focus and blurred edges and random brightness? or is that just when the pots inside are going bad and has little else to do with the HV?
 
both


sometimes youll smell ozone too and hear light arcing before they fully puke out


Thats why its generally a good idea to replace a fly when it starts showing symptons or ihas light small visible cracks. Its much cheaper to replace a fly on a working chassis then it is to wait untill it fully pukes out because then you are replacing hots, fregs, caps, and god knows what else.
 
sometimes youll smell ozone too and hear light arcing before they fully puke out

That's what happened the day my Tempest flyback passed away.. The sound was similar to that when I got my Lucky and Wild and powered it up for the first time, not knowing its flyback had already croaked as well.

It's a sound you don't forget. LOL.
 
Yeah, I had planned on replacing it after the party. The out of focus issue wasnt that bad, so I figured I had time.. Apparently not.
 
I've had flybacks go with lighting shooting out to the frame - and nothing else on the monitor went bad.

And I've had flybacks fail with no visible or audible noise - and take the HOT, fuse, and sometimes some other parts with it.

Start by replacing the flyback, then check the fuse. if it blew (doubtful if it has isolation built in) or not, check the HOT anyway...
 
I've had flybacks go with lighting shooting out to the frame - and nothing else on the monitor went bad.

And I've had flybacks fail with no visible or audible noise - and take the HOT, fuse, and sometimes some other parts with it.

Start by replacing the flyback, then check the fuse. if it blew (doubtful if it has isolation built in) or not, check the HOT anyway...


Okay, I'll give it a shot. What flyback should I use? I see the MRCFT-249 and the MRCFT-252 on Bob's site and he doesnt know either. Also what HOT do I order?

Thanks for the help!


 
get the part number off the old hot. Should be right on it.. prolly a "cxxxx" or Dxxx" number. IIRC the hot is mounted to the metal heat sink on the same side of the chassis as the flyback.

take a look at the flyback and see if theres any numbers on that. IIRC some of those neotecs used one fly some used another. I do not know if they interchange or not.
 
you know what now that i think about it i think they both work, but one was a revised unit to help with focus drift or something
 
get the part number off the old hot. Should be right on it.. prolly a "cxxxx" or Dxxx" number. IIRC the hot is mounted to the metal heat sink on the same side of the chassis as the flyback.

take a look at the flyback and see if theres any numbers on that. IIRC some of those neotecs used one fly some used another. I do not know if they interchange or not.


Duhhhhh on my part. Lol

C4542 for the 27E, and C5143 for the 25E

So for the flyback maybe the later # is the better? Hmmm. I didnt see numbers on the flys. Have to take the chassis apart to look better and clean off the dust.
 
Just a quick update: Replaced the flyback (with MRCFT-252). Powered it up and the monitor made quite chirping noises. No glow.

Pulled the HOT. It was shorted across all three legs. Replaced. Monitor came up with a great picture (after turning the screen adjustment up)

Fixed. Simple!!
 
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