electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
LG37LF65 PROBLEM

 
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
markopolo



Joined: 01 Nov 2011
Posts: 1
Location: Slovenija

PostPosted: Tue Nov 01, 2011 1:14 pm    Post subject: LG37LF65 PROBLEM Reply with quote

Hello!

I have a problem with LG37LF65 first the picture has been deemed and after a while gone.
I have realised that the C203 on the power board has been boiled.
I have changed it and all the capacitors on the secondary power suply.
I have tested the 24 V and 12V with a dummy load and everything is stable.
But I still do not have a picture anly the voice.
The inverter has 24V and on the inverter on pin is 4.5V so the bulb should glow but it doesn't.
While making a discovery I found out that the 19V when the load is connected falls on 18.1V.
If this is ok then the only thing that has left is the inverter board.
Am I right ?
I'd appreciate it if you could assist me with any ideas or send me a complete schematic diagram.

Thank you in advance!
Back to top
View user's profile Send private message
jts1957



Joined: 24 Nov 2008
Posts: 2472
Location: Far, Far Away

PostPosted: Tue Nov 01, 2011 7:15 pm    Post subject: Reply with quote

Or the lamp(s), or the bulb connectors, or ...

http://elektrotanya.com/lg_37lf65-zc_chassis_ld75a_sm.pdf/download.html
_________________
You're over there, I'm over here.
Back to top
View user's profile Send private message
minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Tue Nov 01, 2011 7:50 pm    Post subject: Reply with quote

If you have no picture but sound, 24 volts going to the panel and the 5 volt inverter on, bad panel not cost effective. I do show inverters are available google the full product CODE like LG 37LF65-ZC.AECYLJG then "inverter."
http://www.shopjimmy.com/lg-37lf65-zc.aecyljg
Back to top
View user's profile Send private message Send e-mail
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