electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
Fuse keeps blowing in dvd player

 
Post new topic   This topic is locked: you cannot edit posts or make replies.    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs
View previous topic :: View next topic  
Author Message
TheBox
Guest





PostPosted: Sat May 14, 2005 1:58 pm    Post subject: Fuse keeps blowing in dvd player Reply with quote

Hi, I have a dvd player that wouldnt turn on. After opening it, I found that the fuse was blown inside it on the power board. I replaced it, plugged it in again and it blew right away.

1) Any clue on the problem off hand?
2) How would I go about isolating the problem?

Thanks!
JB
Back to top
TheBox
Guest





PostPosted: Sat May 14, 2005 2:05 pm    Post subject: BTW Reply with quote

BTW - its a Sony DVP-CX850D. The schema is in the manual database but I'm a newbie in regards to making use of them.
Back to top
ballynafie



Joined: 13 Mar 2005
Posts: 2
Location: N Ireland

PostPosted: Sun May 15, 2005 7:23 pm    Post subject: Reply with quote

When you say the fuse blew right away, did it blow it completely black or just break the fuse wire. Where abouts is the fuse?

Regards
Back to top
View user's profile Send private message
Guest






PostPosted: Sat May 21, 2005 7:55 pm    Post subject: Reply with quote

thanks for the response. the fuse is right next to where the power cord goes into the power board (?). When I plug it in, it blows the fuse with a visible spark. There is usually a black spot within the fuse glass.
Back to top
tsgunnell



Joined: 03 Jun 2004
Posts: 49
Location: middx england

PostPosted: Sun May 22, 2005 8:14 pm    Post subject: Reply with quote

i should check the bridge rectifier the mains smothing capacitor .i looked at the circuit and it uses quite a few fets any of which could be s/c
Back to top
View user's profile Send private message
CC
Guest





PostPosted: Fri Oct 07, 2005 12:52 am    Post subject: Re: Fuse keeps blowing in dvd player Reply with quote

I am wondering if you found out what the problem was? I have experiencing similar difiicutlies with my CD player--fuse keeps blowing out-

Thanx.



TheBox wrote:
Hi, I have a dvd player that wouldnt turn on. After opening it, I found that the fuse was blown inside it on the power board. I replaced it, plugged it in again and it blew right away.

1) Any clue on the problem off hand?
2) How would I go about isolating the problem?

Thanks!
JB
Back to top
Ray
Guest





PostPosted: Sat Oct 08, 2005 1:43 am    Post subject: Reply with quote

More than likely main chopper transistor(FET) is shorted which may or may not have taken out other devices (scan diodes or drive transistor) with it. Have seen & repaired it many times in my work. ---more than involved for a non-technician tho.

On the other hand you can change the entire power supply (if still avail) but then it may be cost prohibitive
Back to top
Display posts from previous:   
Post new topic   This topic is locked: you cannot edit posts or make replies.    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