Acer 1716B no picture, Blinking power light

[nico95]

Re: Acer 1716B no picture, Blinking power light

I just posted a pic of the backside. I hope that helps.
Thanks

[nico95]

Re: Acer 1716B no picture, Blinking power light

They each says KDY on the left side going veritically. In the middle is 1691 and then below that there is a 603. Im guessing they are 1691? I have a dumb question. I have never been good or figured out how to test a Transister especially for a short. I don't believe my meter says short on the diode mode. They are a BCE package. any help with testingwise would be appreciated. Sorry Im still learning some some stuff.
Thanks,
Nick

[retiredcaps]

Re: Acer 1716B no picture, Blinking power light

Can you also post a pic of the underside? The J921 area looks a bit discolored from something on the underside?

[retiredcaps]

Re: Acer 1716B no picture, Blinking power light

Check the two transistors flanking C221 (grey square cap) to make sure they are not shorted.

What part number are those two?

[nico95]

Re: Acer 1716B no picture, Blinking power light

Thanks PlainBill, sorry I forgot about a pic
I just attached it. I can take closeup if needed.
Thanks,

Nick

[PlainBill]

Re: Acer 1716B no picture, Blinking power light

Hi,
I have a Acer 1716B LCD monitor. It was working fine and then one day no picture, just black. No backlight from what I could tell. The power light blinks green. I took it apart and didn't see any bad caps. I also took a ESR meter and tested them all. I didn't come across any with high ESR. All seemed to be in range or rather close. My meter tests in circuit and also tests Capacitance. I know many times it tests High capacitance in circuit but I don't think the Caps are a problem at this point capacitance wise. I think they would be much lower if they where in circuit, but obviously it is possible. Nothing is bulging or leaking. Everything I ran across on line pointed to bulging caps. Any and all help is greatly appreciated. I would really like to get this monitor going if possible. Reasonably.
Thanks,
Nick

Oh Crystal Ball, can you show me this monitor? Nope, it's not helping today.

Guess you are going to have to do this the easy way. Take an overall picture of the power supply board and attach it to your reply. Follow the link in my signature for the procedure.

Some models of Acer monitors were notorious for shorted inverter transistors.

PlainBill

[nico95]

Hi,
I have a Acer 1716B LCD monitor. It was working fine and then one day no picture, just black. No backlight from what I could tell. The power light blinks green. I took it apart and didn't see any bad caps. I also took a ESR meter and tested them all. I didn't come across any with high ESR. All seemed to be in range or rather close. My meter tests in circuit and also tests Capacitance. I know many times it tests High capacitance in circuit but I don't think the Caps are a problem at this point capacitance wise. I think they would be much lower if they where in circuit, but obviously it is possible. Nothing is bulging or leaking. Everything I ran across on line pointed to bulging caps. Any and all help is greatly appreciated. I would really like to get this monitor going if possible. Reasonably.
Thanks,
Nick