Amonits MW9BNK repair question

[SteveF]

I have a Amonits MW9BNK 19 inch TFT display.

First - Does this look like a bad capacitor? The goo coming
out the top and out by the legs makes it seem suspect.

http://i861.photobucket.com/albums/ab172/ncsnbsmf/BadCap_zps3dc33b16.jpg

I could not find any information on this model, but the power supply is
an Emax:

PWR0501904004A
Rev. 1
J700330004DP

Symptoms:

Over a period of time the color quality diminished.
Recently (on boot-up) the BIOS screen would show up
and then when Windows XP started to load the screen
would go blank. After the PC stopped making hard
drive noises, cycling the power on/off would bring
the screen back on. The display would function with
poor color/contrast/brightness/whatever until the
resolution was changed, then the display would go
blank again.

I recently started using a 42 inch plasma TV as a
primary display to get better color balance and
display properties. However, I hooked up the Amonits
without changing the resolution back down to its
native resolution, and the Amonits has not worked
since.

It will appear to try and cycle on, then make a weird
electronic noise, then cycle on and off, without any
information being displayed on the screen. The display
will seemingly cycle power on/off as indicated by the
power LED on the front of the display.

Question:

Do any of you think that replacement of this capacitor
might fix the problem, or is this unit a basket case?

I could not find any other parts on the power supply
board, or the display board, that looked bad. I am
using the RGB input port and do not have a DVI output
from the PC.

Any information that may be available would be appreciated.
Looking up the power supply did not bring much, either.
This is a cheap, made in China display that I wish to
use for text type use (such as reading this group) when
the TV is in use as a TV.

Thank you,
Steve

 

[Sam]

On 10/01/2014 22:20, SteveF wrote:
> First - Does this look like a bad capacitor?

No, see below.

The goo coming out the top and out by the legs makes it seem
suspect.

That isn't goo coming out of the top & legs - it is some type of glue or
other fixative added during manufacturing, to keep the cap and the
ferrite beads on the legs in place.

I agree that the symptoms likely point to a PSU-related fault, but I
don't know that model to be able to offer other detailed suggestions.

Based just on experience with other PSUs, I would look _closely_ at the
electrolytics (top _and_ bottom of each) for _any_ sign of distress /
bulging, and check for any dry solder joints.

 

[SteveF]

On 1/12/2014 8:06 AM, Sam wrote:

On 10/01/2014 22:20, SteveF wrote:
First - Does this look like a bad capacitor?

No, see below.

The goo coming out the top and out by the legs makes it seem
suspect.

That isn't goo coming out of the top & legs - it is some type of glue or
other fixative added during manufacturing, to keep the cap and the
ferrite beads on the legs in place.

I agree that the symptoms likely point to a PSU-related fault, but I
don't know that model to be able to offer other detailed suggestions.

Based just on experience with other PSUs, I would look _closely_ at the
electrolytics (top _and_ bottom of each) for _any_ sign of distress /
bulging, and check for any dry solder joints.

Thank you. I already looked for obvious problems with electrolytics.
None of them have any abnormal bulges. A closer inspection of the
solder joints will be performed. I think I need a magnifying glass
with a higher power, or new eyes.