"George" wrote in message
news
Hi,

I have now inherited two Daewoo DVG-5200S players which exhibit the
same problem and was wondering if anyone in the repair field may be
familiar with this failure and have an idea of how difficult (or
impossible) it might be to repair:

Composite out (my usual connection) suddenly appears to have lost sync
or something. The output is now gray and is squashed diagonally over
to one side. Component out seems to be OK, but I have no devices
capable of testing or receiving that (one of the three outputs sends a
properly synced black and white picture to my composite input).

Notes:

These players are only comprised of around three main boards. The
power supply board is on one side, I believe one board on the other
side holds all the main video circuitry, as well as the failed output,
audio outs, and optical out, and another small daughterboard with the
component outs on it attaches to that. The main board has a lot of
small electrolytic caps, a crystal (I think it was 27MHz), and a bunch
of surface mount IC's and junk (probably an "out of my league"
repair). I have recently purchased an ESR meter kit and believe I have
tested and replaced most of the suspicious caps on one, but I don't
think they were bad anyway.

I wasn't around for either failure, but they sounded as if there was
no obvious cause, they just stopped working. I own the exact same
unit and mine has worked flawlessly for a couple years. It's one of my
favorites and I'd like to see one of the others back in service.

If it's easy enough, I'd obviously prefer to fix the composite out,
but I could possibly look into doing a component to composite circuit,
if it isn't too complicated. I'm kind of hoping that Daewoo is known
for putting a faulty part in these models and someone has already
tracked it down.

Please reply in the newsgroup and thanks a lot!

George



This is exactly the sort of thing you get when someone's been reading this
weeks copy of " DVD Hacker's Weekly " and has tried the latest sequence of
remote button pushes to turn a single region player into one that plays any
region, any standard, and probably video tapes as well ...

Using the component output where you manage to get at least some sort of
locked display, check all of the setup menus - particularly anything to do
with picture setups or standards setup. You may well find that it has had
some odd mode like Secam set. Some players have a " restore defaults " menu
entry. If you say that you've got another of these that's working correctly,
examine the setup menus on that one, and compare the entries that are set.

Don't believe owners when they tell you " It just stopped working ". I would
say that 90% of the DVD faults of this nature that I see are due to
customers having ' fiddled ' to try and get it to play that foreign DVD that
Aunty Maud brought back from her holiday ...

Arfa

George wrote:

Composite out (my usual connection) suddenly appears to have lost sync
or something. The output is now gray and is squashed diagonally over
to one side. Component out seems to be OK, but I have no devices
capable of testing or receiving that (one of the three outputs sends a
properly synced black and white picture to my composite input).

I've seen a similar situation with an Apex DVD player, but found that
the issue was due to the progressive scan setting being enabled
accidentally. For some reason, the progressive scan setting also
affected the scanning of the composite output. There are supposed to be
ways to reset this by a few remote control presses, but I didn't have
the original manual at my disposal. I was eventually able to reset it
by "feeling around" in the setup menus with what little I could discern
from the television's output.

Maybe this is the case for your Daewoo players? Progressive scan
settings seem even more suspect if you say that the compoent out is
working fine on your television; perhaps your television supports
progressive scan?

Anyway, my two cents.
-Darrick

"George" wrote in message
...
Arfa,

Thanks! I had considered that the units had bumped into the wrong
region format mode, but I've seen mine try to play a weird resolution
of PAL framerate before and it just rolled or had bars at the bottom
or something. I didn't know if it could go B&W from that. I'll check
it, but the owner's were an uncle, and a friend of the uncle. They're
the type who would be extremely lucky if they could figure out how to
navigate through "folder/DVDROM" mode, let alone enter any weird
region commands. ; ) They'd also have told me if they tried.

I guess there is a possibility that the Daewoos can get easily zapped
back to whatever defaults they have, without permission. I've read
that their quality control isn't the greatest, that's why I was hoping
that someone was familiar with the problem.

I didn't bother to check the caps on the power supply board, but I
will, or I can just swap one of the bad video boards with mine, to see
if it works OK (unless someone here thinks that would endanger my good
board).

If anyone has any other suggestions or knows a region or test mode
which would present a skewed black and white composite out, I
appreciate any help.

-Thanks Again!

BTW- Arfa, It's actually one of the short black models with nothing
but the DVD player. The same uncle bought one of the silver Daewoo
players with the built-in VCR, and it was like a whole different
brand. It barely played anything.




You've seen the advert on the telly. In the trade, it reads slightly
differently - a little more like

" Piece of crap ? That'll be the Daewoo ... " ;-)

Arfa