acer al1916w

[nbdy]

Hi ...

Read all about 2 sec to black,but can not turn the monitor on :-(

Have changed the caps,the mosfets (40t03gp with 40n03gp),checked the
transformator,diodes,fuses, but the pictore is not willing to show ...

the green led stays on,when connected to computer if the computer goes
to slip mode the monitor goes to slip mode.

The back lights don't come on,but i don't know what to check more ...

the board is 190m005 bf 02a ...

thx

[TVRepairNoobie]

Re: acer al1916w

nbdy,
Please attach clear picture of the board so we can also see what you are looking at.

[1supertech]

Re: acer al1916w

Did you check for smd fuses on the back of the power supply

[nbdy]

Re: acer al1916w

Did you check for smd fuses on the back of the power supply

yes the W and the S fuse are OK

[nbdy]

Re: acer al1916w

nbdy,
Please attach clear picture of the board so we can also see what you are looking at.

the board is 190m005 from delta,will upload it ...

[Porto]

Re: acer al1916w

Also check the diodes for shorts and, if present, voltage regulators for the correct voltage input/output.
A schematic of the board helps.

[budm]

Re: acer al1916w

"The back lights don't come on,but i don't know what to check more ..." So the backlights do not even flash on for seconds? Did you check and see if you do have BL-ON (INVR-ON) and DIM control signals?

[jetadm123]

Re: acer al1916w

I believe they used 3 smd fuses on the bottom of the board: F100, F101 and F200

[budm]

Re: acer al1916w

the board is 190m005 from delta,will upload it ...

The number is 19M005 not 190M005, right?

[nbdy]

Re: acer al1916w

The number is 19M005 not 190M005, right?

Yes,don't know who put the 0 behind the 19 ;-)

sorry for wrong info

Can you explain a little what do you mean with BL-ON (INVR-ON) and DIM control signals

[nbdy]

Re: acer al1916w

I believe they used 3 smd fuses on the bottom of the board: F100, F101 and F200

Then I have to search for the third fuse ...

thx

[budm]

Re: acer al1916w

Yes,don't know who put the 0 behind the 19 ;-)

sorry for wrong info

Can you explain a little what do you mean with BL-ON (INVR-ON) and DIM control signals

The Main/Logic board has to send the command signal to turn on (>2.5VDC = ON, <1VDC = OFF) the BCKLIGHTS circuit, also DIMMING (Can be Analog siganl or PWM signal depend on the circuit design) command to control the Backlights level.

[nbdy]

Re: acer al1916w

Sorry,was working ...

I have found the fuses,and the 200 is broken,so tomorow I will buy it and test ...

I will reply later

[nbdy]

Re: acer al1916w

Solved with the 4a fuse ...

thx to jetadm123