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Search: Posts Made By: lion_sta
Forum: Troubleshooting Computer Displays 12-10-2016, 05:23 AM
Replies: 2
Views: 835
Posted By lion_sta
Re: Benq FP19G+ turns on and off randomly

I actually started typing that you're probably wrong because it was ok for tens of minutes and then without touchig it it would turn itself off and on.

Still, after replacing a random cap with a...
Forum: Troubleshooting Computer Displays 12-08-2016, 02:54 AM
Replies: 2
Views: 835
Posted By lion_sta
Benq FP19G+ turns on and off randomly

Hello,

Like the title says this monitor started to turn itself on and off randmly.
It can work for 10 minutes or 30 minutes and then off, I can turn it on almost instantly.

The problem was...
Forum: Troubleshooting Computer Displays 11-09-2016, 04:08 PM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Fixed - bad soldering on my part.
Forum: Troubleshooting Computer Displays 11-06-2016, 03:45 PM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Update 2.

Apparently it might have something to do with a connection.

If I have it in a certain position it works. Spin it a little and it's off.

How, I wonder would I find where the circuit...
Forum: Troubleshooting Computer Displays 11-06-2016, 11:20 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Update.

If I start the monitor without the screen attached, just the lower panel - then I have that light - on/off.

If I connect the monitor, there doesn't seem to be too much activity.

The...
Forum: Troubleshooting Computer Displays 11-06-2016, 05:10 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Aaand I'm back.

Same monitor. Almost like someone unplugged it from the outlet. That was my first impression. I even turned around angrily looking who did that.

No sign of life.

So far...
Forum: Troubleshooting Computer Displays 09-10-2016, 03:11 PM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Your knowledge and power of deduction on that resistance made it possible to fix another monitor.
After three months of waiting for those little pieces from China, managed to put it all together....
Forum: Troubleshooting Computer Displays 05-05-2016, 06:32 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

LD7575PS
104699

That'a what's written on that IC. If it wasn't broken before, I managed to that when desoldering. I will go to the market and try and find it.

How about that MOSFET
A 2761I...
Forum: Troubleshooting Computer Displays 05-04-2016, 12:10 PM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Oh, no, we're not looking at the same IC. I was looking at the Inverter Transformer. That yellow thing. Was sure you said I should replace that. Sorry.

I will take a look at it tomorrow because...
Forum: Troubleshooting Computer Displays 05-04-2016, 11:44 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Actually this is all that I could find on the IC:

SPW-205
SBI4 . 2 E156193
FEC 1110 A

Exactly like that. Unless there is something written on the bottom as I haven't desoldered it yet.
...
Forum: Troubleshooting Computer Displays 05-04-2016, 09:50 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Ok, I need your help guys.

I have the A 2761I MOSFET and the SMD IC - SPW-205 (SBI4 . 2 E156193 FEC 1110 A)

I cant find them both here, where I'm from. On Aliexpress I can find only the MOSFET....
Forum: Troubleshooting Computer Displays 05-03-2016, 03:52 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

I can't seem to find anywhere that IC.

Worst case scenario I will order the whole power board from Aliexpress.

But I will try to start it with the new mosfet and resistances.
Forum: Troubleshooting Computer Displays 04-28-2016, 08:09 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Can that SMD IC be checked?

I am going to hate these resistances by the time I'm done with repairing. The other two are not too clear either. One of them shows no result. The other one shows...
Forum: Troubleshooting Computer Displays 04-27-2016, 01:39 PM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Did that with the MOSFET out of circuit and the same thing. Very low resistance among all pins. Guess it's bad.
Forum: Troubleshooting Computer Displays 04-27-2016, 11:57 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

That resistance, that is also circled in the image, shows open circuit. No reading whatsoever.
Without removing the MOSFET from the circuit I get very low resistance between the S and D, G and D,...
Forum: Troubleshooting Computer Displays 04-27-2016, 11:37 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Wish I knew how you figured that out.

Thank you either way.

Do you mean I need to also replace the one I marked with one?
Forum: Troubleshooting Computer Displays 04-27-2016, 09:38 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

How about that resistance, do you think I will mess it all up if I replace it with something not quite the same?
Forum: Troubleshooting Computer Displays 04-27-2016, 06:48 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Right. If I remove it completely, would that do?

but first I'll check if it's actually faulty. Thanks.
Forum: Troubleshooting Computer Displays 04-27-2016, 06:10 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

Also, if I can't find this very resistance, what is the closest resistance that I can get away with?
50 Ohm I think would be too little?
100 Ohm, will it start at all?
Forum: Troubleshooting Computer Displays 04-27-2016, 02:20 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Re: Asus VH238 Shortcircuit

I see. Will look for that resistance.

The audio part - not such a big deal.

Any of you have the service manual or the schematics of the board? I will want to know what voltages I need to have...
Forum: Troubleshooting Computer Displays 04-26-2016, 04:02 AM
Replies: 11
Views: 1,525
Posted By lion_sta
Re: 11P06 - how to test

Yay, after replacing that capacitor the monitor started working.

Haven't used for like 4 years and now compared to my main monitor it's so yellow.

Thank you all for your input and to you...
Forum: Troubleshooting Computer Displays 04-26-2016, 03:52 AM
Replies: 31
Views: 3,701
Posted By lion_sta
Asus VH238 Shortcircuit

Hello,

I had this monitor for 3-4 years or so. About half a year back (when I knew less about monitors than I know now) it started shutting of after a couple of hours and I would have to let it...
Forum: Troubleshooting Computer Displays 04-25-2016, 05:26 AM
Replies: 11
Views: 1,525
Posted By lion_sta
Re: 11P06 - how to test

I have actually seen the leakage but thought that it might be some rust on the leg.

Anyway, already bought the replacement and can't wait to get home and replace it.
Forum: Troubleshooting Computer Displays 04-24-2016, 04:01 PM
Replies: 11
Views: 1,525
Posted By lion_sta
Re: 11P06 - how to test

You have some eyesight!

I noticed that there might be some' wrong since it was going to 0 in an instant, but everyone said they dont fail.
Will replace it tomorrow.
Forum: Troubleshooting Computer Displays 04-24-2016, 09:49 AM
Replies: 11
Views: 1,525
Posted By lion_sta
Re: 11P06 - how to test

Now tested - with the three back lights plugged in I don't get any image.
Showing results 1 to 25 of 37

 
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