OK, what did I do to my Sanyo EZ20 this time?!?!

Vectorman

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Guys,

Once again did one of my favorite things.....took a fully working monitor, did a cap kit, and now it has a problem that I can't figure out. Yes, I was extremely careful and I went back over my work and checked every single cap and solder joint and can't see anything wrong. I even capped it a second time in case one of the caps I put in the first time was bad. Does anyone know where to look for this problem based on my picture?

The picture is now only on the top half of the monitor as you can see.

Thanks for any help you can provide....

John
 

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I'd suggest you stop doing cap kits to perfectly good monitors. Lol. J/K

Post pics of the top and back side of the chassis. I know it's a pain to pull it again but trust me the experts here may be able to spot bad solder joints and ect. It's a humbling experience but it will make you better.
 
I'm guessing a solder bridge/splash or not enough solder somewhere. Did you reflow solder anywhere else? Was the second recap attempt done with the same set of caps? If so, I would order another cap kit (APAR ideally) and try it again with a new kit.

Hopefully, the chassis wasn't flexed enough to crack a trace or anything. For what it's worth you might even move the service switch back and forth. One direction will put it into full collapse and other other position is normal operation.

Thanks,
Jason
 
Also check your connections to the little board with the pots and don't be lazy when testing the monitor and let that thing flap in the breeze, screw it down. If the solder points on the back touch the chassis it'll short things out.
 
Thanks for the suggestions guys. I am always super careful with the remote board. Also checked all those connections. The second cap kit was all new caps. I'm always super careful not to crack the chassis as I know these ez20s are super fragile. Here are close up pics of the top and bottom of the chassis.


I was hoping someone would recognize the problem and know right where to go.

Let me know if you see anything....thanks!
John
 
Check this thread:


Could be a transistor issue.

Thanks,
Jason
 
Since you're in partial vertical collapse, check the vertical IC's one may be bad. Also check the diodes around them to make sure none are shorted. Look for a popped pad or trace in that area as well.
 
Insert the old mantra that if it aint broke don't fix it…something I still haven't learned myself either…
 
Insert the old mantra that if it aint broke don't fix it…something I still haven't learned myself either…
I know....the thing is that I am working on my next arcade expansion (Arcadia Unlimited) that will have (when all phases done) 550 video games. Since I'm a one man show, I'm replacing caps on everything - monitors, boards, and power supplies - before every game goes in there. I have to minimize breakdowns preventatively for my own future well-being. The downside is that every once in a while I take something fully working and break it....like in this case.
 
I know....the thing is that I am working on my next arcade expansion (Arcadia Unlimited) that will have (when all phases done) 550 video games. Since I'm a one man show, I'm replacing caps on everything - monitors, boards, and power supplies - before every game goes in there. I have to minimize breakdowns preventatively for my own future well-being. The downside is that every once in a while I take something fully working and break it....like in this case.
I mostly break what was never broken myself so something must be REALLY bad for me to take a crack at it
 
I know....the thing is that I am working on my next arcade expansion (Arcadia Unlimited) that will have (when all phases done) 550 video games. Since I'm a one man show, I'm replacing caps on everything - monitors, boards, and power supplies - before every game goes in there. I have to minimize breakdowns preventatively for my own future well-being. The downside is that every once in a while I take something fully working and break it....like in this case.

You can't win them all, send it to
and keep truckin
 
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