electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
Sampo KM-777 Monitor Main Board PWB-3177-4

 
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs
View previous topic :: View next topic  
Author Message
Dishfarmer
Guest





PostPosted: Thu May 05, 2011 9:54 pm    Post subject: Sampo KM-777 Monitor Main Board PWB-3177-4 Reply with quote

Smile Hi Everyone,
Looking for any ideas with a dead CRT Monitor as above, nil pwr to tri colour LED. Only life is a click from the smps transformer once a second.
I have changed the PWM IC and checked the FET on the primary, checked the HOT and all the main caps on the +70V rail.

Giving a VGA input signal nil effect either.
Something is loading the main rails down or maybe the smps trasformer is shorted or the horz o/p transistor is still defective?
Any ideas appreciated.
Aar Razz on.
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs All times are GMT
Page 1 of 1

 
Jump to:  
You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Електроника София - Service Manuals Free Download - Prikachi - Service Diagrams

Free TV Schematics Download - HARDW.net - Pinout Master - Jabse Search - Jabse.InK  - Pulsator

Connector Pinout Forum - Новини - SnimkiOt.com - безплатен DNS - Whois разузнаване - Poblizo.com : пътешествия