Question about Toshiba 26HL84 26 in. HD-Ready LCD Television

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Toshiba 27wlt56b dead psu

I have a toshiba 27wlt56b which had 8 bad caps in the psu (2x4700uF and 6x1000uF). I have revived it from the dead, and it seems ok now, but to get the dvi-d to show in the menu, i have to go into the engineers menu and factory reset it. If I dont, only dtv, atv and av inputs are there. Also, if i dont reset it, its onscreen display is off the screen to the right. any ideas?

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Posted on Nov 18, 2009

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Hp P6000 fans stop after 15 seconds. Hard drive light stays on. nothing on monitor


dead PC, DESKTOP PC ,as old as 2009.
the fans tells you the PSU shut off, for cause.
fans, so you saw all fans turn off or just 1. or 2 of 3.
my pc has 4 fans many have 3;
CPU fan stops ,cpu overheats , PC goes slow or dead. clean the lint off it.
GPU fan , video goes dead. if it overheats.
PSU fan is inside the PSU if it goes bad, PSU is bad.
no monitor stated, is it CRT or LCD is it 15 years old.
if the monitor is 2002 or newer the OSD screen works
even with PC turned off, press the select button see that OSD screen ? telling you the monitor is not dead in 1second flat;
i caN NOT understand why the HDD lamp glows,
if the PSU shuts off , most LEDs go dead, on my PC
the standby LED on the MOBO glows, unless you pull the PSU power cord.
your HP PC came with 9 different mobo, during its production run.
at least. so answers come harder from that reason.

here are some simple tests.
test 1
power on, hear fans run
does the DVD drive (or cd) button eject work,.?
do all fans not just 1 or 2 worK? look for all fans clean the lent out
or things will overheat,
PSU can be bench tested or in the PC case.
using a jumper wire, even the HP service manual covers that.

power on the PC (after keeping monitor on for 5 full minutes)
test 2
the Screen must say, "hit ESC key to enter HP setup" BIOS.
press the ESC key on the monitor
if no text shows up that is a dead PC< "text above missing{"
if the PC told you to hit another key do so.
The ESC key , activates the BIOS brain. this cause
all those pages to work as seen in your service manual;.
if BIOS is dead that is a bad PSU (monitor ok)
or CPU is overheated.
bad ram, take all sticks out and test 1 by 1, ask how. !
The PSU will shut down on up to 12 or more faults
but never shuts down the standby power bus. unless AC line pulled.
IF the PSU has fan as most do this is the first place I look.



try this guide
https://support.hp.com/us-en/document/bph06788

Jul 08, 2017 | HP Computers & Internet

1 Answer

Why is my tv saying when i try to set it up no signal. it is a toshiba 27wlt56b can you help please ?


It only says "no signal" on the screen, when it does not get a signal. So check you did plug in the correct cable from your antenna or receiver. Also check the cable for bad contacts. Do check an antenna amplifier if it gets the power it needs (when used)

Feb 22, 2015 | Toshiba Televison & Video

1 Answer

How do I change the language from Japenese to english in my 27Wlt56B Toshiba TV remote control?


If you factory reset, you can then select language but if you don't read Japanese, good luck!

Oct 07, 2014 | Computers & Internet

1 Answer

Hannstar ACER j mv-4 doesn't start up


no pc stated, maker or model #,, sounds kinda DESKTOP>?????
no oS stated
step one is test the MV4 on a known working pc,!!!
why wait, this so basic....
are you using VGA to VGA or DVI to DVI connections??????

the DESKTOP,
no sound means the fans are dead and PSU dead.
The PSU will run for 1 second and fans run now. if not PSU is dead.
if fans do run and stop that means PSU dead or mobo shorts or bad reg on MOBO. or bad ram. strip it down to test that.

ok fan runs that means 12vdc good. if stay running,
and if PSU stays up, then NEXT TEST IS Screen
is it 100 % dead, or do you get text or logos."
100% dead means to me bad VGA card(or chip GPU)
if the Hot key for BIOS fails, that means bad POWER/
or bad VIDEO card.

the fans run but are silent, I envy you.. sell me your fans....
im 1/2 deaf from Vietnam and can still hear all my fans.

my DT has 4 fans min. (it's Alien-ware box++++)
CPU, GPU and PSU, and 1 case fan,all must work.
do yours?

when you power on a PSU, the fans run and stay running
if that takes sides off so be it, ever clean the 5lbs of lent seen inside from 5 years, collected?
If you dont service any pc, this packs up and the CPU overheats
and shuts its self down by DESIGN.
why no do that service first.
see that CPU, see those fins, see that pack up there.
blow it out, outdoors, using CAN-0-AIR

mine over heats my GPU fast with lent, my Graphics car runs super hot and fast and lent is NOT ALLOWED here. ever..

old pcs with slow cpu ,, tend to packup slower, well lets say
they can run longer with huge lent here. its just slug processor so...
that is what it does.

recap.
  1. fans all run.
  2. BIOS dead?
  3. screen dead. no words no text at all.
  4. MV4 tested on other PC works. proves PC bad.
  5. LENT PACK job. as all do every year here, all.
  6. Bad VGA caRD. or using wrong port if PC has 2 VGA jacks. !

Jun 22, 2017 | Compaq Computers & Internet

1 Answer

I have a Compaq Presario SR1830NX desktop, I leave it on all the time, when I got up this morning, it was off, so I pressed the power button, but it doesn't power on, nothing happens.. I checked the power...


step 2 the TECH uses a voltmeter and checks all wires on PSU for correct voltage.

PSU in Desktop dead, my guess fans dead too right>
you never said, what it does inside PC ,except nothing
does nothing mean dead silence?
the fan must run for 1second, then goes off.
a 1 second run tells me the PC power switch told the MOBO to turn on and in turn it tells the PSU to turn on,
the PSU then turns on for at least 1second,and if the voltages are ok
then the PSU stays on, else off goes.

15 and 16?
the 20 pin older supplies those are both ground
but 24 pin ATX pins are correct there.
the voltages are here.
https://en.wikipedia.org/wiki/ATX


There are 2 causes, of dead power button.
1: the buttons 2 wire cable ends fell off. at button or PC mobo.
2: The PSU is bad.
3: the MOBO is bad.

The mobo can also shut off any PSU, if the PSU fails
or it sees the regulators in the MOBO fail.
the Desktop runs on many power rails.
some in the PSU, others on the MOBO.
THe mobo creates special low voltage for the CPU.

the power good pin, does that #8,
One way to see if the MOBO is overload
is to remove things from it, I start at RAM
lacking a voltmeter, this is very hard to fix any thing electric.
only guessing or pulling objects PC can find shorts.
pull all power cables there, hdd, power, cdrom.
all things that use red/yellow wires.
all SATA cables, all USB , then ram. even a fan can short
a good tech keeps an open mind, and finds why the PSU shut down.
in most cases, the PSU is bad. but not always.

This is a feature, of ATX it keeps you from blowing up say a
$300 microprocessor.... or fancy gaming Video card (have one)?
yes, pull the video card too.

Jun 25, 2017 | HP Compaq Presario SR1630NX PC Desktop

1 Answer

Tdps8 is dead. replaced swollen 3300uf cap in psu. Wave form on collector of the chopper transistor is poor.


replace it. and you might want to replace the cap with one with a higher voltage, too. toshibas are known for their blown caps that are underrated.

Sep 11, 2009 | Toshiba TDP-S8 Multimedia Projector

2 Answers

I have a Toshiba 27WLT56B. A year ago it developed a problem: (1) I have to switch it on from the buttons on top of the TV. (2) Only after 10 minutes does it respond to the remote control (RC). (3)...


there it is a complicated problem your tv seem to have one big problem with the supply module inside him the power current was accidentaly increased and now your tv dont respond better and your picture is enlarged because had a big alimentation current and now you must to go in authorized service to fix that problem

Dec 11, 2008 | Televison & Video

3 Answers

My hitachi lcd will not come out of standby mode it uses the 17pw15-8 power supply. have you got any ideas


stuck in standby can be caused by c877 and c878 both box type caps 15n 400v. But the fault which is causing most of this is Q837 suface mounted transistor type bsh103 which is connected to pin 8 of sg3525a control ic807.

Aug 29, 2008 | Televison & Video

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