DVD Player cold startup problem
 

Hi,

My DVD player starts to give me problems as every cold start requires a
shutdown/restart cycle to get it working. Once it started to work,
everything works perfectly - no undetected discs, no skips, no audio/video
drops.

The symptom:

1. Upon cold powerup, insert any disc (DVD, CD, VCD), the player tray will
retract and the read LED either blinks and remain steady or not blink at
all. Control buttons and remote control are not able to wake up player. The
laser did not move to home position and player hang.

2. Shutdown the main power.

3. Restart the player, eject the disc and retract the tray, the disc play
perfectly.


I discovered two capacitors starting to leak yellowish/brownish materials at
the power PCB, perhaps this is the cause of power problem?

I live in tropical region where temperature is between 24 degree celcius to
34 degree celcius, so unlikely due to temperature issue.


--
Hong Chin Siong
Singapore
Visit my homesite @ www.hongcs.per.sg

DVD Player cold startup problem
 

I would start by changing the caps if you see physical leaking.

The best thing to do is use an ESR meter and check all the caps in the power
supply. Most of the time when any electronic parts fail including caps,
there is no visible indication.

--

JANA
_____


"Hong Chin Siong" wrote in message
...
Hi,

My DVD player starts to give me problems as every cold start requires a
shutdown/restart cycle to get it working. Once it started to work,
everything works perfectly - no undetected discs, no skips, no audio/video
drops.

The symptom:

1. Upon cold powerup, insert any disc (DVD, CD, VCD), the player tray will
retract and the read LED either blinks and remain steady or not blink at
all. Control buttons and remote control are not able to wake up player. The
laser did not move to home position and player hang.

2. Shutdown the main power.

3. Restart the player, eject the disc and retract the tray, the disc play
perfectly.


I discovered two capacitors starting to leak yellowish/brownish materials at
the power PCB, perhaps this is the cause of power problem?

I live in tropical region where temperature is between 24 degree celcius to
34 degree celcius, so unlikely due to temperature issue.


--
Hong Chin Siong
Singapore
Visit my homesite @ www.hongcs.per.sg

DVD Player cold startup problem
 

The problem is almost certainly electronic. I would start by replacing the
caps that appear to be leaking.

However... It's also possible you're not loading the disk correctly. You
might be placing it a bit off-center. This would keep the player from
operating. This is unlikely, but it doesn't hurt to check.

DVD Player cold startup problem
 

On Tuesday 25 December 2007 15:54, Hong Chin Siong wrote:

Hi,

My DVD player starts to give me problems as every cold start requires a
shutdown/restart cycle to get it working. Once it started to work,
everything works perfectly - no undetected discs, no skips, no audio/video
drops.

The symptom:

1. Upon cold powerup, insert any disc (DVD, CD, VCD), the player tray will
retract and the read LED either blinks and remain steady or not blink at
all. Control buttons and remote control are not able to wake up player. The
laser did not move to home position and player hang.

2. Shutdown the main power.

3. Restart the player, eject the disc and retract the tray, the disc play
perfectly.


I discovered two capacitors starting to leak yellowish/brownish materials at
the power PCB, perhaps this is the cause of power problem?

I live in tropical region where temperature is between 24 degree celcius to
34 degree celcius, so unlikely due to temperature issue.

One of my computers once had a mainboard with some leaking caps. The symptoms
were the same as yours; sometimes it would fail to boot when cold, but when
started, would work all the time.

I'd start by replacing those.

BTW, the hotter caps are, the sooner they will fail. If the player tends to get
hot inside (which is more of an issue with a tropical climate), it may very
well have been the cause of accelerated capacitor failure.

DVD Player cold startup problem
 

JANA wrote:

I would start by changing the caps if you see physical leaking.

The best thing to do is use an ESR meter and check all the caps in the
power supply. Most of the time when any electronic parts fail including
caps, there is no visible indication.


Yes. I replace 2 caps today and so far so good.

Thanks all for your suggestions.

--
Hong Chin Siong
Visit My Homesite @ www.hongcs.per.sg