View Single Post
  #7   Report Post  
Posted to sci.electronics.repair
Ismo Salonen Ismo Salonen is offline
external usenet poster
 
Posts: 6
Default Proview 986m 19" monitor

On 02/05/2011 11:35 PM, JR North wrote:
Monitor erupted in much smoke and loud hissing. Video scrambled but
stayed up. I lunged for the power cord behind it, and unplugged it
within 2 seconds. I took it apart, confident in finding some burst
cap or two. Nothing. Everything on close visual inspection looks
good. No burned traces or bulging/fried components. The board fuse is
OK. I've repaired this monitor twice since new in 2000. A couple caps
in the PS (would't start), and reflowed neck board (video brightness
up/down).
Could a fbt do this, and not show any signs? Something definatly
gassed out violently. It smelled more like burned insulation than the
acrid fried cap smell. I'm not competent to power up the board with
it apart.
JR

I've once seen blown fbt which had tiny hole on side. It was hard to see
but obviously there must be either that or some cap. An ESR meter is a
must to find out these almost failed caps, make life much easier.

br
ismo