odd WG7000 startup problem

[Doughbroz]

Odd to me, anyway, never saw this before.  On a cold startup, absolutely nothing.  No pic, no crackle, no glow in neck.  In this condition, I have 60VAC on both ends of the fuse.  The test pin next to the RGB inputs is .23 volts.  In the corner of the chassis next to the transformer there are two large resistors connected end to end, mounted vertically, with the other ends going into the chassis.  Voltage at the connection point between the two is 126 volts.  It will stay in this condition until power is turned off and back on, then the monitor immediately fires up and works normally until the next cold start.  As long as it's warm, it will start up every time.  When working, the aforementioned voltages are 12 volts and 90 volts.  It's not a bad connection because I can prod, poke, and beat on the chassis with no effect, and all solder joints look perfect.  Any ideas before I waste a cap kit,  or is that the first thing to try.  Thanks

[Ken Layton]

If it hasn't had a capkit then that's the first thing to do. Bad caps (off value or open circuit or 'leaky') can cause intermittent startup problems or even cause heat related problems.

[qrz]

there is a 47uF @63 volt cap in the smps that will cause it to have start up issues.
the cap filters the b+ to the pwm drive ic .

qrz

[Ken Layton]

Um.... the K7000 does not have a switch mode power supply.

[sarge]

I've always had luck changing C57 (47@160) to cure startup and shutdown problems with this monitor.

[Doughbroz]

Thanks guys, cap kit it is.

[qrz]

um..., ur right ken 
thats what i get for jumpin' the gun.....must be gettin' senile ....?   

 if faulty, c23  (47uF@25v)  would cause the horiz osc to be unstable......
the 47uF @160v ( c57) is vreg filtering . if faulty, the regulated voltage will be unstable and may
cause some interesting symptoms in several stages.......

 here's the print :

  www.arcadeworldllc.com/images/Scans/Monitor%20Schematics/Wells_Gardner_K7000_Service_Manual.pdf

qrz