WG k7401 problems.

[ac3]

Hi all,
I recently recapped a WG K7401 in my Sports Shooting cabinet as I was having some problems with it not staying on and the imaging shaking a little bit. I replaced all but 3 or 4 caps that I couldn't find replacements for, it's been working fine for about a week today I turn it on and after about 2 minutes I hear two pops I look and the monitor is off and smoke is coming out of the back.

I can't see it could be any of the caps I just installed as they would of gone when I first turned it on?. Is it likely to be one of the few I couldn't find replacements for?. Has anyone had this happen before?. I've heard of caps being installed around the wrong way popping when powered on but never after working fine for a week. Also does anyone know where I can find a cap list for this monitor I had to go by the old caps and maybe I put a BP one where a normal one should for or vice versa?.

TIA ac3.

[grantspain]

i accidently put the wrong value cap in a hantarex once,it popped after 2 weeks.
sounds like you have the wrong value cap in somewhere

[Arm123]

Depending on how old the monitor is and when it was last serviced.  It could be component strain from age ?  From the current flow now being corrected ?

What you think spain ?

[grantspain]

What you think spain ?

of what?

[ac3]

It's quite a new monitor, less than five years old. Problem is if Grantspain is right I don't know what value it is as the manual lists everything except the caps.   

[grantspain]

don't cry 
http://www.wellsgardner.com/pdf/Schematics/K7400_25_inch.pdf
all your caps are stated here-although good eye sight required

http://www.wellsgardner.com/pdf/Repair/K7400_25_inch.pdf
this will help if it don't turn out to be a dodgy cap

[qrz]

and pay attention to polarity when replacing 'lytics .....

reversing will "let the smoke out" .

remember: all electronic devices are smoke powered   

qrz

[ac3]

The cap that blew was a 100uf 200v, which was installed originally.  I think the new one just must of been a dud, I'll install a new fuse and keep my fingers crossed when powering it on.

[ac3]

Replaced the blown cap and fuse and now it trips the circuit. 

[grantspain]

you need to check that you have not dripped some solder across tracks.
for the trip to go it would imply that you have a dead short on the primary power supply of the monitor

[ac3]

I know there aren't any solder shorts as it was working fine for a week, I've done quite a few cap kits and I'm very careful. I'm guessing whatever blew made the cap that was fine blow too and is now shorted?. Could it be the lopt?. I don't really know where to go from here unless I see something on the board that is physically damaged.

[grantspain]

can't see it being the lopti
http://www.wellsgardner.com/pdf/Repair/K7400_25_inch.pdf
likely to be q101 or d104
did you replace the same value fuse?

[ac3]

I've had a chance to look at this now and it seems the second time I powered it on a lot of the components went pop. C118 was a film capacitor the schems just list it as 1.0 63v, I am guessing this means 1uf 63v?. Also R101 is bad which I cannot find on the schems does anyone know what this is?. It's got what looks like MSP 103 written on it.

TIA ac3.