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Bauer XT32 / Phihong PSU fault

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ProDave:
I've got a Bauer XT32 which is a bit of an obscure set as far as I can tell.

It's PSU is completely blown.  The PSU is a Phihong switching power supply model PSM210-417

Does anyone have any information, circuit diagrams etc either for this PSU or the whole set?

sparky:
hi
charles hyde do a kit also ohmsuppies
dave

ProDave:

--- Quote from: sparky on June 12, 2010,17:08:33 ---hi
charles hyde do a kit also ohmsuppies
dave

--- End quote ---
Thanks, I just found that myself.  I think Ohm supplies originate the kit and CHS just sell it (as CHS are more expensive.

I'm a bit reluctant to buy the kit as I don't know the state of this tv (i.e is the screen any good etc) so I'm looking to try and power up the tv to test the rest of it first.

Since this PSU outputs 5V, 12V and 24V, i'm tempted to rig up 3 bench power supplies to try and power up the set to see if it works okay before spending the money on the PSU repair kit.  Anyone ever tried anything like that?

I've also done some more research.  It seems these PSU's are unreliable and there's a lot of people with failures.  On mine the 5V standby IC has obviously blown (i's missing a leg) but the whole primary is shot (it just blows input fuses) hence I would need the full kit.

But what's puzzling me, is there are large splat marks on the chassis when you remove the PSU, but not much corresponding damage on the PSU.  To me it looks like there has been a flashover from the PSU to the chassis, rather than a PSU component blowing and causing the splat marks.

Could it be insufficient clearance between the PSU and chassis is the root of the unreliability of these? a sheet of mica insulation glued to the chassis, or longer spacers perhaps?

Turnip:
Hi Pd,

The 5v S/by FSD200 is the usual problem - see Profilo Telra. Occasionally replacement of all the burned bits in the basic kit does the job. Failing that you are in some problem, as you can replace all the bits in the comprehensive kit and it still might not go - guess how I know ?

Fortunately this PS is also used in a certain cheapo plasma for low voltage supplies only where it has a quiet life - mended some XT32s from this source.

Confess that both my house tellies are XT32s, and the wife won't have my nice newly mended LG 42" plasma even though 'Corrie' and 'Emmy' would look bigger, and for me 'Dave', for a smile after the day's mending would be just the biz - Shucks - Chris.

Never win, ever  - Chris

ProDave:
When I get time I'll have another look and see.  All I know for certain is the 5V stby reg has blown one of it's legs off, and the mains input fuse blows straight away.  From that I assumed the whole primary was U/S so was intending to buy the full kit, but could a blown 5V stby reg explain blowing the mains input fuse?   I'll remove the main heatsink later and have a look for more blown up parts.

What make and model set uses the same PSU? I'll keep my eyes open. If you don't want to tell everybody, send me a PM.

As you seem to know a lot about this set, I don't suppose you know a working Sky remote control setup code to allow a sky remote to operate this set?  I haven't found one listed anywhere yet.

As I say, before I spend much money on this I want to try powering it up from a set of bench PSU's to make sure the rest of the set, and the screen is okay.

I'm interested in you keeping and using two XT32's.  Have you done anything to improve the reliability?  I have bought this one as faulty, but having found out how unreliable this PSU is, I would be very concerned about keeping it to use unless there was something that could be done to improve the reliability, so if I do get it going it will probably be off to ebay.

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