Installed cap kit, now it's dead.

BobsterD

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I have a Makvision 2425 (CH-288 chassis) that was just getting a touch of foldover so I thought I'd freshen it up with a Zanen cap kit. After installing the kit, the unit is now dead, won't power up. I noticed a couple of posts saying to change C511 from 100uf to 220uf, did that but no change. Still dead, doesn't want to power up. Frustrating..... especially since the unit was working before the kit.

Anyone have any ideas where to look next?
 
What have you tried? Rechecked the orientation of all the caps? Made sure the flyback is mated to the tube correctly? Any blown fuses? Getting neck glow?
 
Not all monitor problems are due to capacitors, no idea why they are quoted as curing everything from wonky eyesight to cancer on Klov. Something was probably on its last legs and the disturbance of cap-kitting it has finally killed it.
 
Not all monitor problems are due to capacitors, no idea why they are quoted as curing everything from wonky eyesight to cancer on Klov. Something was probably on its last legs and the disturbance of cap-kitting it has finally killed it.

you sure do keep pounding this subject don't you? while I agree, cap kits aren't the cure-all for monitor issues, they do encompass a variety of different fixes. I also get irritated when the person that posts a monitor problem is an obvious noob and some of the guys are like "install a cap kit" like it's a 5 minute job or you're supposed to produce a bag of caps from your ass, not to mention the OP probably doesn't have the skill or the patience to do it.

a lot of times monitor chassis form varying degrees of cold solder scattered all over the place; while you got the soldering iron out and you're doing all those caps anyway, it's a good idea to start scraping old flux off or getting rid of ancient solder and redoing it properly. I started adopting that method on my later cap jobs of the last year, mainly cause I did some Sanyos where colors would go out and I had some Polos and D9200s that had the same issue, so I redo the neck transistors and large resistors entirely.

foldover, yeah, that can be a cap thing, or it could be a faulty adjustment pot too I suppose. cap kits aren't the cure-all, especially if it's an adjustment you overlooked, and I've seen those Makvisions have plenty of undocumented adjustment pots on them. they're garbage monitors, but we run a couple of them in our game room, one being a tri-res with 3 years of use on it now... I dread the day I have to work on that.

for the OP, recheck your work. make sure you have no solder bridges or if you desoldered some wrong pins maybe, make sure everything gets resoldered! did that on a transformer on a K7500 once, click of death. :) fortunately it didn't damage anything, 2 solder joints and it lived again. check B+, sometimes you have to turn the Screen adjustment on the flyback all the way down and see if that gets it to fire up again. you have to verify that it's either an issue where power's not getting someplace or if it's HV shutdown.
 
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Nope, no neck glow. Fuses OK. I have reinstalled the unit twice and am sure that all connections, remote boards, yoke and such are correct. I'm going to go back through my work today to see if there's something I missed as when I have situations like this and am looking for a larger problem it's usually something small I goofed on.

Although not as experienced as many on here, I have installed dozens of cap kits on my monitors to (usually) terrific results. Did a Neo 2515c yesterday that looks fantastic.

I have found that many of the people on here are more than happy to help solve others problems. Special shout to Ken, Mod, Mecha187 and DogP as they've not only helped me with difficult repairs, but helped my education as well!
 
you sure do keep pounding this subject don't you?

Yep I do, because it is usually bad advice, given to people who probably should not be mucking around inside a monitor, have even seen it on threads where people obviously have a game board fault and there is nothing wrong with the monitor at all.
 
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I dont see how its bad advice? Its never bad to do a cap kit. Every monitor out there could use a tune up. Even if it is a board issue, a cap kit still isnt "bad".

Plus, if you're going to be in this hobby, you at least need to know how to adjust a monitor and be able to discharge it and send it out to get repaired.

Yep I do, because it is usually bad advice, given to people who probably should not be mucking around inside a monitor, have even seen it on threads where people obviously have a game board fault and there is nothing wrong with the monitor at all.
 
Yep I do, because it is usually bad advice, given to people who probably should not be mucking around inside a monitor, have even seen it on threads where people obviously have a game board fault and there is nothing wrong with the monitor at all.

bad advice? hahahahaha. if the person asking the question can't tell the difference between a monitor issue or a game board issue, then that's their own fault, unless it's tough to say. and if the people making the recommendations for fixes can't tell either, then since you're so knowledgeable why don't you point it out? that's what I do.

like Adamdiz alluded to, if you're going to partake in this hobby you need to know how to do these things. a monitor cap kit isn't what I would consider uber advanced. when you get into the other intricate components of a monitor, that's different.
 
bad advice? hahahahaha. if the person asking the question can't tell the difference between a monitor issue or a game board issue, then that's their own fault, unless it's tough to say. and if the people making the recommendations for fixes can't tell either, then since you're so knowledgeable why don't you point it out? that's what I do.

like Adamdiz alluded to, if you're going to partake in this hobby you need to know how to do these things. a monitor cap kit isn't what I would consider uber advanced. when you get into the other intricate components of a monitor, that's different.

No its not hard to do, its just mostly pointless, it is usually only a few caps on a board that are bad, most commonly ones near heat sources, so replacing the whole lot is not necessary, and in many cases it risks disturbing other faults as seems to be the case in this thread. The capkit approach is only practiced by folk without an ESR meter who can't tell which 2 or 3 actually need replacing and if it makes them happy then why not, it might cure the fault, it might not, it might prolong the monitors life, it might actually reduce it. I am just amused by the fact it is recomended for virtually every single monitor fault. Actually diagnosing a monitor fault from afar based on static photos or text description is a hit and miss affair anyway so the diagnosis of bad caps everytime is even more ludicrous.

I can only assume the OP now has to post his chassis off for repair which may be more expensive for a completely dead chassis than one that had a slight fault originally, depending on what has finally died it may no longer be an economical repair.
 
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No its not hard to do, its just mostly pointless, it is usually only a few caps on a board that are bad, most commonly ones near heat sources, so replacing the whole lot is not necessary, and in many cases it risks disturbing other faults as seems to be the case in this thread.

I would agree in some cases, and disagree in others.

Your all-original G07? Completely cap it. Every one.

Something much newer? Bust out the ESR meter and start finding the bad ones.
 
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