electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
Sanyo CE28WN5-B no picture/sound

 
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
marpate1
Guest





PostPosted: Tue May 16, 2006 2:38 am    Post subject: Sanyo CE28WN5-B no picture/sound Reply with quote

Hi all,

I have the above TV which does not do very much at all. When switched on there is no sound or picture (unless A1 is adjusted when the screen turns green and scan lines appear).

I would welome any ideas of where to start with this.

I have schematics and cct diagram for the same chassis (EB6-A28), but the actual circuit board is a little different.

Any advice welcomed Smile

Thanks,
Mark
Back to top
marpate1



Joined: 16 May 2006
Posts: 2

PostPosted: Tue May 16, 2006 5:49 am    Post subject: Reply with quote

I've looked into this a little further. All of the DC rails seem to be OK so I will do some more digging, but I really hope that this is not a problem with the processor side of things Sad
Back to top
View user's profile Send private message
marpate1



Joined: 16 May 2006
Posts: 2

PostPosted: Tue May 16, 2006 3:42 pm    Post subject: Reply with quote

Right, a little more info. I connected my daughters gamecube to the scart and although there is no picture, there is at least sound Very Happy

So, it looks like the output driver stage to the CRT may be at fault.

Any idea on how to test this?

Cheers,
Mark
Back to top
View user's profile Send private message
Samuelddd



Joined: 18 May 2006
Posts: 4

PostPosted: Thu May 18, 2006 12:22 am    Post subject: Basis Reply with quote

marpate1 wrote:
All of the DC rails seem to be OK so I will do some more digging, but I really hope that this is not a problem with the processor side of things.


"problem" is the basis to everything we know about this subject.
_________________
Hostels Chicago
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Guest






PostPosted: Thu May 18, 2006 6:08 pm    Post subject: Reply with quote

When you tested all of the dc rails, are you sure they did not have excessive noise or ripple on them? Is the B+ within spec?
Back to top
arty_bhoy
Guest





PostPosted: Fri Jun 16, 2006 4:59 am    Post subject: Reply with quote

hey i have the same television and i was just wondering what you have your picture settings set at as the way i have it just now the picture seems to be extreamly green in dark scenes. (settings like BRIGHTNESS, CONTRAST, SHARPNESS, COLOUR etc.)
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