Sceptre x22wg-Gamer 22" LCD

[mack505]

Re: Sceptre x22wg-Gamer 22" LCD

No. Here is my philosophy.

Let's take an extremely simple case. Take a monitor off the shelf, do a quick test, it doesn't work. Open it up, notice one cap is bulging. Replace the cap, test the monitor, it works, put the monitor together again. Elapsed time - 1 hour and $1.00 of parts.

Now most of the caps came from the same company, or at least are of the same quality, and have been exposed to the same temperatures and similar stress. Replacing all of the caps would have taken an additional half hour, and an additional $5 in parts.

Some of the monitors I repair are given to family members, but most are sold. Let's take the best case - I give one to my 12 year old Granddaughter. Now she's a bright young lady, she knows Grandpa makes mistakes. If the monitor dies in the next year or two she would politely ask me to fix it when I got a chance. Which means I would make it a priority job. And I would be looking at another hour long job to replace the next cap that died.

A much worse case is if I had sold the monitor. Even with an ESR meter, I can't tell how long a cap is going to last. In particular, the small 22 - 68uF startup cap will fail without warning or visible signs. Now if a monitor I sold in the past month dies, I have a very unhappy customer who at best will insist I repair it FAST, and will probably badmouth me at every opportunity.

In either case, it's worth half an hour of extra work and $5 in parts to make sure it's fixed the first time.

Note the critical parameters - capacity, voltage, diameter, and height and I'll recommend suitable replacements.

PlainBill

1 million thanks! I am back up and running after replacing the 7 capacitors, under $5 total.

The 7 items from Digikey were:
1 - 493-1575-ND
2 - P12366-ND
4 - P12389-ND

[FIXITNOW]

Re: Sceptre x22wg-Gamer 22" LCD

i will second that PlainBill
the pile of items i have had come my way with the words (i had it fixed a few weeks ago at ******* repair shop) can you do a better job ??
only to open it up and see the previous repair had done only a basic repair
not even a reflow of the common d/j areas
its sloppy if you want repeat work do a proper job

[PlainBill]

Re: Sceptre x22wg-Gamer 22" LCD

Thanks Bill, do you know how the other 3 are labeled? As C551, etc are?

No. Here is my philosophy.

Let's take an extremely simple case. Take a monitor off the shelf, do a quick test, it doesn't work. Open it up, notice one cap is bulging. Replace the cap, test the monitor, it works, put the monitor together again. Elapsed time - 1 hour and $1.00 of parts.

Now most of the caps came from the same company, or at least are of the same quality, and have been exposed to the same temperatures and similar stress. Replacing all of the caps would have taken an additional half hour, and an additional $5 in parts.

Some of the monitors I repair are given to family members, but most are sold. Let's take the best case - I give one to my 12 year old Granddaughter. Now she's a bright young lady, she knows Grandpa makes mistakes. If the monitor dies in the next year or two she would politely ask me to fix it when I got a chance. Which means I would make it a priority job. And I would be looking at another hour long job to replace the next cap that died.

A much worse case is if I had sold the monitor. Even with an ESR meter, I can't tell how long a cap is going to last. In particular, the small 22 - 68uF startup cap will fail without warning or visible signs. Now if a monitor I sold in the past month dies, I have a very unhappy customer who at best will insist I repair it FAST, and will probably badmouth me at every opportunity.

In either case, it's worth half an hour of extra work and $5 in parts to make sure it's fixed the first time.

Note the critical parameters - capacity, voltage, diameter, and height and I'll recommend suitable replacements.

PlainBill

[jetadm123]

Re: Sceptre x22wg-Gamer 22" LCD

Thanks Bill, do you know how the other 3 are labeled? As C551, etc are?

Take look at post #1 of this thread.

[mack505]

Re: Sceptre x22wg-Gamer 22" LCD

There are three more that you are ignoring. The small one next to the SMPs transformer is very important. If it fails, the power supply won't start. And in that location it gets plenty of heat. There are two for the inverter that should also be replaced.

PlainBill

Thanks Bill, do you know how the other 3 are labeled? As C551, etc are?

[PlainBill]

Re: Sceptre x22wg-Gamer 22" LCD

Hi PlainBill, thanks for your response. I am planing on P12389-ND from Digikey. Is it just those 4? C551, C552, C554, and C664?

I could not correct the red tint with adjustments. It was almost as if you had 2 of the 3 cables plugged in on a component video connection, like that. VGA worked fine though.

There are three more that you are ignoring. The small one next to the SMPs transformer is very important. If it fails, the power supply won't start. And in that location it gets plenty of heat. There are two for the inverter that should also be replaced.

PlainBill

[mack505]

Re: Sceptre x22wg-Gamer 22" LCD

The recommendation is to replace all the electrolytic caps with the possible exception of the large (100uF, 450 volt) one. Use low ESR name brand caps, not junk from Radio Shack.

A red tint is often the result of failing CCFLs, but since it only appears on the DVI input, that is probably not the issue in your case. Have you tried adjusting the tint using the menu?

PlainBill

Hi PlainBill, thanks for your response. I am planing on P12389-ND from Digikey. Is it just those 4? C551, C552, C554, and C664?

I could not correct the red tint with adjustments. It was almost as if you had 2 of the 3 cables plugged in on a component video connection, like that. VGA worked fine though.

[PlainBill]

Re: Sceptre x22wg-Gamer 22" LCD

Hi, my monitor would not power up at all, no indicator lights at all. Just prior to that, the led indicator would blink really slow interval, no display.

I seem to have the bulging C551 and C552. Start by replacing these?

Also, before I was just using the VGA as the DVI had a red tint to it. By the time I called support, I was out of warranty. Any ideas on that, now that I have it open?

Many thanks in advance!

The recommendation is to replace all the electrolytic caps with the possible exception of the large (100uF, 450 volt) one. Use low ESR name brand caps, not junk from Radio Shack.

A red tint is often the result of failing CCFLs, but since it only appears on the DVI input, that is probably not the issue in your case. Have you tried adjusting the tint using the menu?

PlainBill

[mack505]

Re: Sceptre x22wg-Gamer 22" LCD

Hi, my monitor would not power up at all, no indicator lights at all. Just prior to that, the led indicator would blink really slow interval, no display.

I seem to have the bulging C551 and C552. Start by replacing these?

Also, before I was just using the VGA as the DVI had a red tint to it. By the time I called support, I was out of warranty. Any ideas on that, now that I have it open?

Many thanks in advance!

[hms1018]

Re: Sceptre x22wg-Gamer 22" LCD

@ PlainBill
Thanks a lot. Works like a charm.

[PlainBill]

Re: Sceptre x22wg-Gamer 22" LCD

Hello Everyone!

Noobie here. I just Googled and came across your site which is very informative. I am trying to understand some things and know a little about others. I have just replaced my 2 bad caps "after over a year after taking it apart". I am attaching pics to figure out the dark spots on the back of the PSU, and I need to know exactly how the 4 (Pink and white)cords attach to the monitor into the other 4 cords wrapped in black tape.

Dark spots: This is the AC input to the bridge rectifier. The only idea I have is that poor solder joints were overheating. I'd remove the old solder and resolder.

Four cords: They go back togetherlike they were originally. You didn't label them?

OK!! OK!!! When the power supply is sitting on the back of the panel, the pair from the top of the monitor go to the pair from the top of the power supply. It doesn't matter which way the two pairs go together.

PlainBill

[hms1018]

Re: Sceptre x22wg-Gamer 22" LCD

Hello Everyone!

Noobie here. I just Googled and came across your site which is very informative. I am trying to understand some things and know a little about others. I have just replaced my 2 bad caps "after over a year after taking it apart". I am attaching pics to figure out the dark spots on the back of the PSU, and I need to know exactly how the 4 (Pink and white)cords attach to the monitor into the other 4 cords wrapped in black tape.

[PlainBill]

Re: Sceptre x22wg-Gamer 22" LCD

I tested the ESR on all the caps on my Sceptre X22wg-Gamer monitor's power supply and C551 and C552 were the only ones that were questionable. In my case, like the pictures provided by severach in the first posting of this thread, my C551 and C552 caps were the only ones bulging.

I decided that since my C551 and C552 were obviously failing (bulging) and the ESRs on the other caps seemed reasonable, that I was going to only replace the TWO caps.
Total cost of my repair parts was approx. $5 from Digikey.

My monitor is working fine.

From severach's posting:
>"Bulged caps on power supply:
>C551, C552: CapXon 470uf 25v (runs at 5v, good ESR=0.05, bad esr>=1.1)"

Ordinarily I recommend replacing all electrolytic caps, but would tend to agree that replacing only those which fail an ESR test makes sense.

PlainBill

[FranklinP]

Re: Sceptre x22wg-Gamer 22" LCD

I tested the ESR on all the caps on my Sceptre X22wg-Gamer monitor's power supply and C551 and C552 were the only ones that were questionable. In my case, like the pictures provided by severach in the first posting of this thread, my C551 and C552 caps were the only ones bulging.

I decided that since my C551 and C552 were obviously failing (bulging) and the ESRs on the other caps seemed reasonable, that I was going to only replace the TWO caps.
Total cost of my repair parts was approx. $5 from Digikey.

My monitor is working fine.

From severach's posting:
>"Bulged caps on power supply:
>C551, C552: CapXon 470uf 25v (runs at 5v, good ESR=0.05, bad esr>=1.1)"

[retiredcaps]

Re: Sceptre x22wg-Gamer 22" LCD

Can anyone see if C551 and C552 are bad?

Post 29 (caps) and post 88 (how to attach pics) are applicable in your case.

[clowncarni]

Re: Sceptre x22wg-Gamer 22" LCD

Went to turn on monitor and got a loud pop noise. It cycles in 2 second intervals making a buzz. I figure a cap or two went bad on the power supply. Can anyone see if C551 and C552 are bad? Thanks

http://i.imgur.com/v3wHU.jpg
http://i.imgur.com/qozDx.jpg
http://i.imgur.com/QTJn3.jpg

[cammac725]

Re: Sceptre x22wg-Gamer 22" LCD

The dark spot (overheated?) on the board in photo 2 of the orig. post corresponds with component U4 (regulator?) on the other side of the board, photo 1. I have the same board with the same dark spot and my U4 looks like it overheated (not uniform in color). I also have some failed/bulging capacitors on the power board. I am thinking I'll replace the logic board also.

Now if I can find one. Nothing on ebay.

[Lew]

Re: Sceptre x22wg-Gamer 22" LCD

I no longer have the screen, but I'm still interested if someone gets the DVI and HDMI working...

Why didn't you end up also recapping the logic board? Not that you should, in fact, since it's working, I suggest you don't. It's very easy to destroy the logic board because it's a lot more difficult to solder than the PSU.

Wholly because of my lack of skill and confidence. This was my very first effort at doing any circuit board soldering (ever) and my assessment of the difficulty level of the logic board was the same as you say, "a lot more difficult". So I tested the monitor after replacing the power board caps but before fully re-assembling it. Since it worked, I decided to call it a day before I destroyed it.

I did go ahead and buy the caps for the logic board (that you included in the parts list) when I ordered the power board caps but just opted to call it a day while I was ahead. If it has problems later, I'll re-think it.

Thanks again!

[mockingbird]

Re: Sceptre x22wg-Gamer 22" LCD

I no longer have the screen, but I'm still interested if someone gets the DVI and HDMI working...

Why didn't you end up also recapping the logic board? Not that you should, in fact, since it's working, I suggest you don't. It's very easy to destroy the logic board because it's a lot more difficult to solder than the PSU.

[Lew]

Re: Sceptre x22wg-Gamer 22" LCD

Add another success story to the list!! I replaced the four CapXon 470uf 25v, the two Taicon 1000uf 16v, and the CapXon 33uf 35v and it's working flawlessly on the VGA.

It's still a no go on the DVI and HDMI connection but I'm not going to pursue getting them to work based on mockingbird and PlainBill's experience to date with bird's connections, but I will stay tuned.

Thanks again to all you guys!!! Also, the DigiKey experience was excellent.