Viewsonic VX922 PSU Caps

[protocol.]

I have 4 bad caps on one of my VX 922's, Took it apart today because it was giving me the green blink of death.

I just need to find a place to get these 4 caps from
I live in calgary, ab, canada.

two of them are 470MF 25V
and two are 1000MF 10V

Also, any tips on when replacing these buggers? seems pretty straight foreward to just heat up the solder yank the old ones out and put the new ones in.

[KeriJane]

Re: Viewsonic VX922 PSU Caps

Hi protocol.

Welcome to the Forum.

Yes, the caps are as easy as it appears to replace in your monitor, and will probably cure the blink of death.

To get the correct replacement caps you will need to know the following:

Capacity (470uf)
Voltage (25v)
Size in mm, diameter and length (??x??)
Brand name (???) most are printed in English, some use a logo.
Series (??) usually a 2 or 3 letter code such as LE, PW, MBZ, KZE
Temperature (??C) usually 105C in an LCD monitor

You need to replace the caps with ones of the correct capacity, voltage, heat rating, can size and ESR or Impedance.
The voltage, capacity and temperature are usually marked on the cap.
You find the ESR by looking up the rated ESR/Impedance on the manufacturer's data sheet for the capacitor Series, Voltage and Capacity.

If you have an apparently good cap, you could also measure the ESR with an ESR meter.

Usually General Purpose (GP) caps don't have an ESR rating on the data sheet, so if there isn't one listed it's probably a GP cap.


You can find suitable caps for sale at eBay or DigiKey.com DigiKey's online catalog is nice because you can look at the data sheet right in the catalog.
(example: I have an "Elite" brand "EJ" series "Low ESR" capacitor of 1000uf/16v and 1100Ω ESR, and the catalog shows a similar Nichicon PW with 1220Ω ESR- close enough)

General Purpose caps are usually what you will find at Radio Shack or other electronics stores.

Good Luck,
Keri

[rl22]

Re: Viewsonic VX922 PSU Caps

Hi, I have a VX 922 with the blinking light syndrome. I replaced 6 bad caps which fixed the blinking power light but there is still no image. Were you successful in your repair?
Thanks,
RL

[rolfa]

Re: Viewsonic VX922 PSU Caps

I also have one VA922 blinking. Just dissembled it. Don't find what caps to exchange.
I think it's easier to buy another brand.
rolfa

[budm]

Re: Viewsonic VX922 PSU Caps

It may have blown MOSFET, BAD CAPS can look normal.
http://s807.photobucket.com/albums/y...sonic%20VX922/

[mikalcarbine]

Re: Viewsonic VX922 PSU Caps

I gave my dad my old VX924 and he had the same problem, we replaced the caps and it fixed the problem

[Samy1]

Re: Viewsonic VX922 PSU Caps

Hi protocol.

Welcome to the Forum.

Yes, the caps are as easy as it appears to replace in your monitor, and will probably cure the blink of death.

To get the correct replacement caps you will need to know the following:

Capacity (470uf)
Voltage (25v)
Size in mm, diameter and length (??x??)
Brand name (???) most are printed in English, some use a logo.
Series (??) usually a 2 or 3 letter code such as LE, PW, MBZ, KZE
Temperature (??C) usually 105C in an LCD monitor

You need to replace the caps with ones of the correct capacity, voltage, heat rating, can size and ESR or Impedance.
The voltage, capacity and temperature are usually marked on the cap.
You find the ESR by looking up the rated ESR/Impedance on the manufacturer's data sheet for the capacitor Series, Voltage and Capacity.

If you have an apparently good cap, you could also measure the ESR with an ESR meter.

Usually General Purpose (GP) caps don't have an ESR rating on the data sheet, so if there isn't one listed it's probably a GP cap.


You can find suitable caps for sale at eBay or DigiKey.com DigiKey's online catalog is nice because you can look at the data sheet right in the catalog.
(example: I have an "Elite" brand "EJ" series "Low ESR" capacitor of 1000uf/16v and 1100Ω ESR, and the catalog shows a similar Nichicon PW with 1220Ω ESR- close enough)

General Purpose caps are usually what you will find at Radio Shack or other electronics stores.

Good Luck,
Keri

Hello!
After following the instructions on finding suitable caps for my VX922, I just finished installing them and it works like a charm!. The only cap I didn't change was the one at C24 (470uf@25v) since it looked in great shape. I might be a little premature in having a successfull cap replacement. What I have to do now is run it under normal conditions and see if it holds.
Thanks for the info.