PSU eval. # n3252w View Sonic, Model vs11335-1m
in [Repair]
|
From: Franc Zabkar on 10 May 2010 00:34 On Tue, 4 May 2010 09:14:44 -0700 (PDT), "ctops.legal" <ctops.legal(a)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.
From: ctops.legal on 12 May 2010 19:45 On May 3, 8:41 am, "ctops.legal" <ctops.le...(a)gmail.com> wrote: > On May 2, 9:56 am, "ctops.legal" <ctops.le...(a)gmail.com> wrote: > > > > > > > On May 1, 4:59 pm, Grant <o...(a)grrr.id.au> wrote: > > > > On Sat, 1 May 2010 10:25:34 -0700 (PDT), "ctops.legal" <ctops.le...(a)gmail.com> wrote: > > > >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 dont want to purchase > > > >an replacement PSU to find out its some other problem thats not > > > >feasible within the clients budget to find I cant 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/-Hidequoted text - > > > > - Show quoted text - > > > Well the unit wont 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 > > PSUs, 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.- Hide quoted text - > > > - 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 ?- Hide quoted text - > > - Show quoted text - LOOK! Can somebody explain to me why the PSU in not mentioned in the service manual ?
From: ctops.legal on 13 May 2010 13:59 On May 12, 7:45 pm, "ctops.legal" <ctops.le...(a)gmail.com> wrote: > On May 3, 8:41 am, "ctops.legal" <ctops.le...(a)gmail.com> wrote: > > > > > > > On May 2, 9:56 am, "ctops.legal" <ctops.le...(a)gmail.com> wrote: > > > > On May 1, 4:59 pm, Grant <o...(a)grrr.id.au> wrote: > > > > > On Sat, 1 May 2010 10:25:34 -0700 (PDT), "ctops.legal" <ctops.le...(a)gmail.com> wrote: > > > > >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 dont want to purchase > > > > >an replacement PSU to find out its some other problem thats not > > > > >feasible within the clients budget to find I cant 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/-Hidequotedtext - > > > > > - Show quoted text - > > > > Well the unit wont 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 > > > PSUs, 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.- Hide quoted text - > > > > - 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 ?- Hide quoted text - > > > - Show quoted text - > > LOOK! > Can somebody explain to me why the PSU in not mentioned in the service > manual ?- Hide quoted text - > > - Show quoted text - LCD # N3252W I just called the PSU was out of stock at View Sonic, the new referenced part is # B00005504, $ 133.42 (no return), any ideas who makes this part ? Curt
From: ctops.legal on 17 May 2010 15:02 On May 10, 12:34 am, Franc Zabkar <fzab...(a)iinternode.on.net> wrote: > On Tue, 4 May 2010 09:14:44 -0700 (PDT), "ctops.legal" > <ctops.le...(a)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. FSP212-3F01, FSP 212W Open Frame Power Supply for 32" LCD TV Panel Size https://us-dc1-order.store.yahoo.net/ymix/MetaController.html?ysco_key_event_id=1&ysco_key_store_id=ramplus-2000§ionId=ysco.ship-bill
First
|
Prev
|
Pages: 1 2 Prev: Conductive grease? Next: LCD Desktop Monitor Fading to White, then Black |