ViewSonic VX2235wm...

[retiredcaps]

Re: ViewSonic VX2235wm...

I am having problems finding the correct Caps @ Digikey.com I found a few but I am having problems with finding the 1000mF 25v Caps with the correct ripple value. Any help would be appreciated.

Assuming diameter is not a problem and you can fit it in, Panasonic FC is close the original Capxon

http://www.digikey.com/product-detai...0278-ND/266287

[jreynolds09]

Re: ViewSonic VX2235wm...

Here is the original caps list for this one.
It has Power Board: Delta: DAC-19M009-AF, REV: 01A
.

I am having problems finding the correct Caps @ Digikey.com I found a few but I am having problems with finding the 1000mF 25v Caps with the correct ripple value. Any help would be appreciated.

[shadowcruise]

Re: ViewSonic VX2235wm...

LCD screen question: so i recently noticed a green spec on my monitor screen whenever it goes to a black image/background. is there a way to fix this? is there maybe dust inside?

I can't speak for any other monitor but in regard to the VX2235, I've been able to fix stuck pixels.

Using a soft cloth over the tip of your finger, rub the screen with your finger nail in the area of the stuck pixel and see if that doesn't resolve the problem.

[shadowcruise]

Re: ViewSonic VX2235wm...

Thanks PlainBill & PCBONEZ for the information you provided in this thread. I have three monitors with the same power boards with similar issues. Your posts enabled me to place an appropriate order @ Digikeys.

[PCBONEZ]

Re: ViewSonic VX2235wm...

Here is the original caps list for this one.
It has Power Board: Delta: DAC-19M009-AF, REV: 01A
.

[retiredcaps]

Re: ViewSonic VX2235wm...

GP caps typically have lower Ripple Current ratings and won't last as long as the proper caps.

Well at least 5 people have mentioned using low ESR caps in this thread alone.

You can lead a horse to water ...

[PCBONEZ]

Re: ViewSonic VX2235wm...

GP caps typically have lower Ripple Current ratings and won't last as long as the proper caps.

Interestingly I just got one of these as a freebie, but I won't have time to look at it until late next week.
.

[r3m1x]

Re: ViewSonic VX2235wm...

Fry's does not sell low-esr caps. Most stores only stock general purpose caps. You should replace the existing caps (with the exception the large 450V, which rarely fails) with low-esr ones like the Panasonic FR, FM or FC series, or you'll likely be opening your monitor again in the near future.

well, so far the monitor is working just fine, but if otherwise i will look into different places to purchase.

[jetadm123]

Re: ViewSonic VX2235wm...

i went to an electronic store like Frys Electronics.

Fry's does not sell low-esr caps. Most stores only stock general purpose caps. You should replace the existing caps (with the exception the large 450V, which rarely fails) with low-esr ones like the Panasonic FR, FM or FC series, or you'll likely be opening your monitor again in the near future.

[r3m1x]

Re: ViewSonic VX2235wm...

That's good news, BUT ...

every time I see that sort of statement I tremble. What store? What brand/series of caps did you use?

i went to an electronic store like Frys Electronics.

[pedro]

Re: ViewSonic VX2235wm...

i've replaced 3 small capacitors successfully and the screen doesn't give me problems anymore.

That's good news, BUT ...

i still have 2 more to replace of which i couldn't find at the store

every time I see that sort of statement I tremble. What store? What brand/series of caps did you use?

[r3m1x]

Re: ViewSonic VX2235wm...

hey everyone!

i've replaced 3 small capacitors successfully and the screen doesn't give me problems anymore. i still have 2 more to replace of which i couldn't find at the store and need to be ordered, but i want to thank everyone who helped me resolve this issue. you guys are the best!


Thanks

[PlainBill]

Re: ViewSonic VX2235wm...

LCD screen question: so i recently noticed a green spec on my monitor screen whenever it goes to a black image/background. is there a way to fix this? is there maybe dust inside?

Stuck pixel. Unrepairable, unless you want to replace the panel.

PlainBill

[shovenose]

Re: ViewSonic VX2235wm...

See if it goes away with the capacitor replacement. Let's tackle one thing at a time here.
If it doesn't go away after the capacitors have been replaced, then we can advise further.

[r3m1x]

Re: ViewSonic VX2235wm...

LCD screen question: so i recently noticed a green spec on my monitor screen whenever it goes to a black image/background. is there a way to fix this? is there maybe dust inside?

[PlainBill]

Re: ViewSonic VX2235wm...

hey guys, i have another different question. would the caps have anything to do with how the screen doesn't show, but only the blue light powers on, and if so, how can i safely change these bad caps. will the caps be safe to touch once i disconnect the power and give it a few minutes. also, can you guys recommend places where i could get these replacements on the attachments. thanks for your patience. i know i'm a noob, but with you guys help i can learn.

The faq has information on removing caps; there also are videos on youtube.

This procedure will walk you through the process of selecting replacement caps.

PlainBill

[r3m1x]

Re: ViewSonic VX2235wm...

hey guys, i have another different question. would the caps have anything to do with how the screen doesn't show, but only the blue light powers on, and if so, how can i safely change these bad caps. will the caps be safe to touch once i disconnect the power and give it a few minutes. also, can you guys recommend places where i could get these replacements on the attachments. thanks for your patience. i know i'm a noob, but with you guys help i can learn.

[r3m1x]

Re: ViewSonic VX2235wm...

thanks for all the help guys! i appreciate it! i will try to replace these bad caps.

[PlainBill]

Re: ViewSonic VX2235wm...

attached are the screenshots of the full monitor, top and bottom, plus the circuit board/power supply. thank you!

Not exactly what I asked for, but good enough that some problems are obvious.

Caps circled in red. Definitely bad, replace.

Caps circled in orange. Could be bad, replace.

Caps circled in yellow. Not visibly bad, but it would be a very good idea to replace them.

PlainBill

[retiredcaps]

Re: ViewSonic VX2235wm...

Even with the flash, I can see at LEAST 4 bulged/domed caps. Since 4/9 failed (or almost 50% failure rate), we recommend replacing ALL the electrolytic capacitors except the largest one which rarely, but not never, fails.

PCBONEZ will if I don't explain that when replacing caps, you want the same or more ripple and the same or less ESR (ohms) as per

https://www.badcaps.net/forum/showpo...47&postcount=3

Members here like Panasonic FR, FM, and FC in that order. You can follow PlainBill's instructions at

https://www.badcaps.net/forum/showpo...33&postcount=2