electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
Charger SMPS input faulty

 
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
Lisander



Joined: 27 Apr 2006
Posts: 7
Location: Iceland

PostPosted: Thu Apr 27, 2006 2:30 am    Post subject: Charger SMPS input faulty Reply with quote

I got a SWIT battery charger model S-3802S <here> and it doesn't seem to be able to oscillate at all so there isn't any output voltage. I've changed the current control IC (IC1) with no luck. All capacators seem to be ok. This SM looks to be controlled with a opto-coupler from the DC part and I haven't found anything there either.

Any (and many) SMPS hints appreciated. Thanks.
Back to top
View user's profile Send private message MSN Messenger
Guest






PostPosted: Thu Apr 27, 2006 4:43 pm    Post subject: Reply with quote

The optocoupler is for voltage regulation. Have you tested the startup resistors?
Back to top
Lisander



Joined: 27 Apr 2006
Posts: 7
Location: Iceland

PostPosted: Thu Apr 27, 2006 7:20 pm    Post subject: Reply with quote

Found it Smile It was one of the two power resistors in the AC circuit (a 3W 75Kohm, out of standard)

Problem solved. Cool
Back to top
View user's profile Send private message MSN Messenger
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