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VideoProjector SONY Tri-Tubes P/N VPH1031QM

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BENOIT

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vph1031qm

Dear everybody, I am looking for a circuit diagram or Repair Manual
of the Videoprojector from SONY (it is a Tri-Tube : it weights 40 Kgs
and has a very beautiful electronics (like in a car!) The Part Number is
VPH1031QM.
Also it has becomed damaged only after plugging it on the 220V~.
So perhaps it may be a fuse a something not difficult but I need some
more hints.
For those interested in other resources for Repair video, monitors, etc..
I give you some address at
http://matthieu.benoit.free.fr/monit.htm
http://matthieu.benoit.free.fr/video.htm
and another : **broken link removed**
Kind Regards,
A+
MB.
 

garfield

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sony vph-1031qm

Hello ,

I have repaired a lot of this equipment in the past.

The schematic of power supply not found in the service manual, only a poor block diagram.

The power supply module figure as TK15.

This procedure can be help you

first of all disconnect the main voltage.

I think that you live in Europe and the main voltage is ac 220 Volts.

Check the voltage selector Switch 220/110 located
in the FA- BOARD, and select the appropriated voltage for you country.



Disconnect FA-3 connector FROM THE FA-BOARD.
Disconnect FA-2 connector FROM THE FA-BOARD


Check with multimeter the D1 diode bridge , and D2 diode bridge, and all components from FA BOARD.

Replace 5 ampers fuse.

Connect a 75 watts lamp in serie with ac input

Power on the mains switch located in the front near the interlock socket.

If all is okey the lamp is full bright then bright decrease.

If okey

from the extreme of FA-3 measure 28 Volts DC.
from the extreme of FA-2 measure 380 Volts DC

If all is okey turn off power main switch , and re connect FA-2 AND FA-3 connector from the SWITCHING POWER SUPPLY Module.

Now you need disconnect the connectors from the power supply to the
metallic case located in the right side (lenses are front view) you locate a drilled metallic case, from here video input and ouput connectors.

Inside the box , you found the QA BOARD , disconnect the Q8 connector
and check the voltages from this connector.

pin out

1 2 3 4 5 6 7
---------------------
O O O O O nc O
---------------------

1 +12 Volts
2 -15 Volts
3 Ground
4 +15
5 Ground
6 N/C
7 115 Volts DC


Test the voltages from the power supply.

If you found problem in the power supply , replace Sanken IC inside hard to find ( don't remember the part number ).

I'm cannot put the manual in pdf format or scanned , sorry me.

If you need more help , send me a PM message

Sorry , my English ,

Good luck :wink:

Regards

Garfiels
 

BENOIT

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tri tubes

I appreciate very much all your help .
I will confirm if I 'll have it repaired. It's not at my home for the
moment So It could take a little time,
Kind regards,
MB.
 

zdrmarti

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vph-1031qm

thank you for this tips


Useless post.
Warning!

--
mw
 

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