Welcome to the updated Slickdeals redesign beta. Learn more and give us feedback. Or, return to the classic view.

Search in
Forum Thread

[Solved] How to fix M24E14 M24EI4 power supply board

qwe1234 580 November 10, 2009 at 11:25 PM
My Soyo 24 monitor that I bought last year at a geeks deal has just died on me today.
Its internal power supply, which most likely is a problem, M24E14 great wall, is nowhere seems to be found but the taobao.com web site.
The zener ZD1 has burned out therefore likely some other components dead too.
Solved by substitution a USA made generic PSU that has required voltage.
Quote from bizcards View Post :
I replaced (adapted) the ZD1 with an axial 30V 1 watt zener diode (to prevent overheating) and it worked like a charm, just watch out for polarity when replacing it. I also replaced a couple of bulked top caps under one of the heatsink.

I hope this will help you as well

Regards

Community Wiki

Last Edited by qwe1234 October 16, 2010 at 05:37 AM
Quote from bizcards View Post :
I replaced (adapted) the ZD1 with an axial 30V 1 watt zener diode (to prevent overheating) and it worked like a charm, just watch out for polarity when replacing it. I also replaced a couple of bulked top caps under one of the heatsink.

I hope this will help you as well

Regards
Thank you.

594 Comments

1 2 3 4 5

Sign up for a Slickdeals account to remove this ad.

#3
Great question. I am also looking for this power supply but have not had any luck finding it. Only been looking for few hours online today.

I used google to translate the pages that I found while searching for "cgcpom24ei4". I couldn't tell if the links I found shipped to the States.

If I find something I will post back. Please, post an answer if you find one.

I also found people possible replacing bulging capacitors as a possible fix to electronic problems with their monitors (different and various brands) - usually on the inverter boards, tho.

I am in SoCal, if you do order and want to do a joint order.


Here are some of the links I found:
http://translate.google.com/trans...safe%3Doff

http://translate.googleuserconten...J3ut04fRuQ
Reply Helpful Comment? 0 0
#4
The monitor PSU is anything like the computer PSU, it's possible it could be fixed by an electronics repair shop.
Reply Helpful Comment? 0 0
L6: Expert
580 Reputation
Original Poster
#5
Thanks for your replies,
That the cool translating tool you found, but it won't translate the actual ordering page and payment and such.
Repair shop is a great idea too. I am trying to fix it miself. The zener ZD1 has burned out therefore likely some other components dead that why.
It is a very basic supply though, the problem is it outputs 24V while PC PSU do not.

However, I have a hard time to translate it and for that reason very skeptical they ship to the US.
http://search1.taobao.com/browse/0/n-g,juzdirjrgq----------------40--commend-0-all-0.htm?ssid=e-s15&at_topsearch=1

Does anyone know a better place to buy it. Please help. TIA.
Reply Helpful Comment? 0 0
#6
I found this snippet that might suggest an alternative from someone asking for help to repair the module you have from this site [jestineyong.com]:

I have a SOYO DYLM24D6 LCD monitor which has recently lost all power. I tried to contact SOYO, however they are now bankrupt. I opened the LCD up and the zd1 (I assume this is a zener diode) looks burned. Can you tell me if there is any way to find out the value of a fried zener without a schematic?

Have to get the schematic unless you have the same board for comparison.


The zener diode has no visible part number on it. I have not been able to find a schematic or any info on the power board online. The power board model number is CGCPOM24EI4″ manufactured by Great Wall. Do you know if this is a common power supply used in many other models?

Sorry never come across such model in my workplace.

It appears that the power supply gives out +5v, +12v and +24v. I would consider using a different (possibly external) power supply (brick) if I could find one that gives the correct voltages and amperage, however I dont see any external power supplies (brick) that give all three voltages +5,+12,+24 - most seem to only output 12v. Thank you for your time and consideration!

You can get a 24 volt DC power supply (with a higher amp) and then lower it down the value to 5 volt and 12 volt using voltage regulator.
Reply Helpful Comment? 0 0
L6: Expert
580 Reputation
Original Poster
#7
Thank you. As this is very simple PSU, the value of the zener can pretty much be estimated from other components involved and some educated guesses based on the knowledge of the power supplies schematics. However, the costs of individual componenets from digikey can be similar to that of the whole unit on the Chinese sites, ordering from whose make the fix much easier. Will they ship here, or should I forget about?
Another approach can be to have a computer or laboratory PSU stand behind the monitor. A computer PSU should have 5V and 12 V. Unfortunately, the monitor also wants 24 Vots, which is not common.
Reply Helpful Comment? 0 0
#8
Tried contacting Soyo or looking for a list of their vendors?
Ebay for a dead panel with supply?
Reply Helpful Comment? 0 0
L6: Expert
580 Reputation
Original Poster
#9
Thanks, but Soyo has gone. http://en.wikipedia.org/wiki/Soyo_Group I do not know how to find the vendors. It is great wall, a Chinese company whose monitor this was rebranded and when searching the PSU model nothing US came up.
On ebay has to be shure the monitor has a different defect, CL can be easier to deal with, but also requires a little bit of the luck.

Last time I had 17 Dell TV that I got for a $1 from delf and its inverter went wrong after couple of years, someone on ebay had a custom made circuit to swap.
Reply Helpful Comment? 0 0

Sign up for a Slickdeals account to remove this ad.

#10
Here is a Great Wall Electronics company in China that makes power supplies and monitors.

http://www.greatwall.cn/Public/Po...ff63d2/en/

Don't know if they are the same and can't seem to find this power supply on their site.


This is an email address found on that site under contact us: chenwj@greatwall.com.cn Maybe we could send them an email and ask where we can find these things?
Reply Helpful Comment? 0 0
#11
I'm in the same boat- I have two of these Soyo 24" lcd's with bad power supplies. One continually blows fuses and has a few shorted components- one of which being the FQPF13N50C N channel MOSFET and who knows what else. The other doesn't blow fuses and had a few bad caps. I replaced the caps (the 1000uf caps on the output) thinking it was going to be an easy fix- nope. The supply is still completely dead- looks like one or more of the voltage regulators is shot. So, I'd like to find replacment supplies for these monitors. As you have all noticed there doesn't seem to be any reference to those supplies available (heck, the only real reference I found was in this thread!). If I find anything that is a close replacement I'll report back here. And, hopefully, if anyone else finds anything they'll post back as well.
Reply Helpful Comment? 0 0
#12
Quote from parrish View Post :
I'm in the same boat- I have two of these Soyo 24" lcd's with bad power supplies. One continually blows fuses and has a few shorted components- one of which being the FQPF13N50C N channel MOSFET and who knows what else. The other doesn't blow fuses and had a few bad caps. I replaced the caps (the 1000uf caps on the output) thinking it was going to be an easy fix- nope. The supply is still completely dead- looks like one or more of the voltage regulators is shot. So, I'd like to find replacment supplies for these monitors. As you have all noticed there doesn't seem to be any reference to those supplies available (heck, the only real reference I found was in this thread!). If I find anything that is a close replacement I'll report back here. And, hopefully, if anyone else finds anything they'll post back as well.
The FET should be available somewhere. Here it is at digikey:
http://parts.digikey.com/1/parts/...3n50c.html

Someone should try writing an email to the address I posted above. I haven't yet, since my supplies are working - but if someone finds these and they are reasonably priced, I would buy a couple or 3. I have 2 Soyo Topaz and I love them. One is fine and has seen little use. The other, which as seen fair usage over the past 1 1/2 years, has a wierd symptom that when it gets warmed up and something commands the backlight off, it will not restart the backlight - only when the supply is warmed up. When the supply cools, it works fine - backlight will restart...until it gets warmed up and something commands the backlight off - like a resolution change, etc. The only thing I have noticed is that one cap is bulging a little, but has not popped - a 1000uF 10 Volt (cant see the temp). The cap will be difficult (but not impossilble) to replace given that it is under one of the heat sinks. I, also, suspect that either the transformer or inductor (which can both be seen in the pictures below) might have winding problems. With the kind of heat this thing generates, there is probably a fair amount of thermal expansion from cooling to heating to cooling cycle, which can lead to a windind short ...who knows...

Here is a link with some pictures of the Power Supply from someone else that has supply problems.
http://www.badcaps.net/forum/show...php?t=8071
Reply Helpful Comment? 0 0
#13
There are other options on the net. One is to just use regular power supplies. May take more than 1, since this thing wants three voltages (24v, 12v, and 5v ...DC i think and your guess at the Amp rating).

The other is to create your own light box ...which is sort of ridiculous. Or replace the fluorescent tubes with LED's. I haven't found anything concrete, but saw something, somewhere that suggest a product in development for sale for this purpose. I have an Onboard Computer on my car whose display backlight burnt out. In looking for a fix, people were replacing the fluorescent tube backlight with a custom LED one. Don't know how this might affect the overall color balance, but that might be correctable.
Reply Helpful Comment? 0 0
#14
From what I can gather from various chinese sites selling the Rev 311 version of this supply, it should cost about 65.00 Chinese yuan = 9.52146 U.S. dollars. I'd buy 3 at this price.

http://translate.googleuserconten...kTBE1Gprcw
Reply Helpful Comment? 0 0
L6: Expert
580 Reputation
Original Poster
#15
Right, but will they ship? And if so how to pay... Probably post a new topic at a deal talk on how to order from China.

I have no electronic equipment at my current location, therefore, probably a substitutional PSUs are most feasible solution. Using a 26 HDTV, which Irvin bank has sent, as a monitor for now.

BTW, the capacitors forum asks for a login to view the pictures, and the great wall site does not work
Reply Helpful Comment? 0 0
Page 1 of 40
1 2 3 4 5
Join the Conversation
Add a Comment
 
Slickdeals Price Tracker
Saving money just got easier.
Start Tracking Today
Copyright 1999 - 2015. Slickdeals, LLC. All Rights Reserved. Copyright / DMCA Notice  •  Privacy Policy  •  Terms of Service  •  Acceptable Use Policy (Rules)