PSU eval. # n3252w View Sonic, Model vs11335-1m
ctops.legal
access (other than the scam sites), the power light comes on after
hard reset then blinks green, bad PSU right ?, well looking at the
main board (2006) the general continuity testing turns out ok, the
specs are as follows:
PSU outputs: 12 pin output to main board, and 10 pin output to video.
PSU has no part# that corresponds to any posts here or in Google
groups, I can clearly see the scratch marks where the PSU has been
replaced and/or looked at by the face plate, I don’t want to purchase
an replacement PSU to find out it’s some other problem that’s not
feasible within the client’s budget to find I can’t return the PSU for
a refund.
Any suggestions would be appreciated, also I suspect a problem with
the inverter based on the “power on response” which is very similar to
a PSU failure.
Description, press power LCD try to start then goes off and the green
power light blinks green.
Please email me directly I will compliment my findings to this forum.
Curt
Grant
>This PSU looks new, being there is no service manual to d/l that I can
>access (other than the scam sites), the power light comes on after
>hard reset then blinks green, bad PSU right ?, well looking at the
>main board (2006) the general continuity testing turns out ok, the
>specs are as follows:
>PSU outputs: 12 pin output to main board, and 10 pin output to video.
>PSU has no part# that corresponds to any posts here or in Google
>groups, I can clearly see the scratch marks where the PSU has been
>replaced and/or looked at by the face plate, I don’t want to purchase
>an replacement PSU to find out it’s some other problem that’s not
>feasible within the client’s budget to find I can’t return the PSU for
>a refund.
>Any suggestions would be appreciated, also I suspect a problem with
>the inverter based on the “power on response” which is very similar to
>a PSU failure.
>Description, press power LCD try to start then goes off and the green
>power light blinks green.
I recently rescued a faulty LCD with similar problem, would turn off
after very short time. Symptoms like bad caps in power supply, except
this monitor ran off an external 12V power brick and nothing looked
busted around the power board.
After much searching I found info on a Russian site which suggested
changing the capacitor across backlight inverter xformer primary as
it had lost capacitance. So I replaced both caps (dual inverter
board for four CCFL tubes) and the thing worked!
Replaced 2 x dark red 220nF 250V with 220nF 630VDC or 275VAC polycarbonate
mains rated cap. Had to mount the caps off-board as they were much larger
than the originals, but there was plenty of horizontal space around the
inverter board.
What started out looking like a power supply problem was in fact over
on the backlight inverter board.
Worth a try?
Grant.
--
http://bugs.id.au/
ctops.legal
>
> - Show quoted text -
Well the unit won’t come on (just a flash of blue), then blinking
green light. I know the client will pay for a PSU I just need to id
this one, the unit was sold in 2007 from what I am reading about this
PSU from this particular model there must have been a bad batch of
PSU’s, and the replacement needs a modified cable, and some people are
using the unit with an external PSU. I this trying a new PSU 1st will
eliminate the need to take the unit apart any further, thanks for the
input.
ctops.legal
>
> > - Show quoted text -
>
> Well the unit won’t come on (just a flash of blue), then blinking
> green light. I know the client will pay for a PSU I just need to id
> this one, the unit was sold in 2007 from what I am reading about this
> PSU from this particular model there must have been a bad batch of
> PSU’s, and the replacement needs a modified cable, and some people are
> using the unit with an external PSU. I this trying a new PSU 1st will
> eliminate the need to take the unit apart any further, thanks for the
>
> - Show quoted text -
The PSU looks like a 2200232015p Rev. 1
A google searched turned up 2 (out of stock), the Unit was sold in
2007, any idea where to find a new PSU ?
Franc Zabkar
<ctops...@gmail.com> put finger to keyboard and composed:
>View Sonic ftp acces to service manuals;
>
>ftp://supportdocs.viewsonic.com/Documents
>username: custaccess
>password: Vssm22338
Thanks!
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
ctops.legal
> On Tue, 4 May 2010 09:14:44 -0700 (PDT), "ctops.legal"
>
> >View Sonic ftp acces to service manuals;
>
> >ftp://supportdocs.viewsonic.com/Documents
> >username: custaccess
> >password: Vssm22338
>
> Thanks!
>
> - Franc Zabkar
> --
> Please remove one 'i' from my address when replying by email.
FSP212-3F01, FSP 212W Open Frame Power Supply for 32" LCD TV Panel
Size