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TheBox Guest
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Posted: Sat May 14, 2005 1:58 pm Post subject: Fuse keeps blowing in dvd player |
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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 |
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TheBox Guest
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Posted: Sat May 14, 2005 2:05 pm Post subject: BTW |
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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. |
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ballynafie
Joined: 13 Mar 2005 Posts: 2 Location: N Ireland
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Posted: Sun May 15, 2005 7:23 pm Post subject: |
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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 |
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Guest
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Posted: Sat May 21, 2005 7:55 pm Post subject: |
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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. |
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tsgunnell
Joined: 03 Jun 2004 Posts: 49 Location: middx england
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Posted: Sun May 22, 2005 8:14 pm Post subject: |
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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 |
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CC Guest
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Posted: Fri Oct 07, 2005 12:52 am Post subject: Re: Fuse keeps blowing in dvd player |
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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 | |
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Ray Guest
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Posted: Sat Oct 08, 2005 1:43 am Post subject: |
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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 |
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