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[Solved] How to fix M24E14 M24EI4 power supply board

qwe1234 2,800 776 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.

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#46
You are right. I completely agree with you. Thanks.

To make it solderless cut the black wires on the pictures of the message 38 and twist them with computer PSU wires on the picture in the mesage 37. Use an isulation tape. That's it.
Or even better. Walmart has solderless connectors like these:
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Last edited by qwe1234 November 20, 2009 at 12:23 AM
#47
Quote from qwe1234 View Post :
You are right. I completely agree with you. Thanks.

To make it solderless cut the black wires on the pictures of the message 38 and twist them with computer PSU wires on the picture in the mesage 37. Use an isulation tape. That's it.
Or even better. Walmart has solderless connectors like these:
Which power supply from the link [ipdpower.com]did you purchase? and how much did it cost?
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#48
My English is not a good side. Sorry, I did not post that I purchased any thing from that link. Also that PSU gets very hot. I do not recommend getting one of those for a least a few time till I post that it breaks because of heat on me. Also it requires soldering or matching female connector.
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#49
Quote from qwe1234 View Post :
My English is not a good side. Sorry, I did not post that I purchased any thing from that link. Also that PSU gets very hot. I do not recommend getting one of those for a least a few time till I post that it breaks because of heat on me. Also it requires soldering or matching female connector.
I am sure your english is better than I can speak or write your native language. Where are you from?

I under stand that you did not purchase the power supply that you are using with the monitor. Do you know the model number of the power supply that you are using? There are many in the link that you posted. There are two that look suitable that support 24VDC. I was wondering which one you might have been using.

I understand to wait until you have done more testing.

I understand about the connectors and wiring.

Thank you for sharing the information.
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#50
If anyone is ever able to get in touch with the manufacturer or a supplier I am willing to buy two of these supplies.
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#51
And you are offering how much ($130 or $250 for 2), delivered to the USA with a US warranty from a reputable seller or As Is? Please this won't happen.
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#52
Quote from parrish View Post :
If anyone is ever able to get in touch with the manufacturer or a supplier I am willing to buy two of these supplies.
Quote from qwe1234 View Post :
And you are offering how much ($130 or $250 for 2), delivered to the USA with a US warranty from a reputable seller or As Is? Please this won't happen.
Why do you say this won't happen?

Personally, I am thinking much much (...umm, much) lower. I don't care about the warranty, but I do want it delivered to the USA. I don't care about the reputability of the seller - other than that the item be new/factory fresh and working.
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#53
I believe this won't happen because you are " thinking much much (...umm, much) lower." And this is not economically sound to take the risks reselling. Also the thing is lower quality and with flowed design thus is not technically sound.

Then if you can put the monitor aside and wait is one thing, while if you need it now is another.

BTW, the easy substitution fix is possible mostly because this Chinese manufacturer was nice enought to write the voltage on the board. Whith out that information I would need a working monitor to measure them, which I do not have.
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Last edited by qwe1234 November 27, 2009 at 10:04 PM
#54
Quote from qwe1234 View Post :
I believe this won't happen because you are " thinking much much (...umm, much) lower." And this is not economically sound to take the risks reselling. Also the thing is lower quality and with flowed design thus is not technically sound.

Then if you can put the monitor aside and wait is one thing, while if you need it now is another.

BTW, the easy substitution fix is possible mostly because this Chinese manufacturer was nice enought to write the voltage on the board. Whith out that information I would need a working monitor to measure them, which I do not have.
How much would you pay to have it delivered to you?
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#55
That's a moot point.
First of all, nobody takes a risk with such a low quality circuit.
Then, according to the web site you linked the cost for such a board in the US could be around the price.
Finally, when the sub will eventually fail due to enormous heating, as as you noticed, I will make an external PSU based on an old computer supply.
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#56
Quote from qwe1234 View Post :
That's a moot point.
First of all, nobody takes a risk with such a low quality circuit.
Then, according to the web site you linked the cost for such a board in the US could be around the price.
Finally, when the sub will eventually fail due to enormous heating, as as you noticed, I will make an external PSU based on an old computer supply.
Not moot to me. First of all, a whole lot of people already took the risk with "such a low quality circuit" and, well at least, I would again. In fact, I would take the risk on more than just one.

Around what price?

IMHO, when my original fails due to enormous heating, I would replace it with REV 311, if available at a reasonable price. IF and WHEN that one fails, I would make my judgement on what to do at that time. Most likely, that decision would result in a change to a whole new monitor.
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Last edited by wasabi_fu November 28, 2009 at 02:45 PM
#57
I'd be willing to pay up to around $40 or $50 for each supply. And I do understand the wholesale price is much lower than that- but I'm not going to buy 100. Also, I don't care about the warranty either. But I do care about the supply fitting inside the case without serious modification- in other words I need it to appear as though nothing at all has been done to the monitor- so no cutting of the plastics, relocating the AC plug, etc. And definitely NO external power supply!

If anyone must know why- it's because we are a computer store and are trying to get these monitors repaired so we can resell them as used. I can't do that if they are all cut up or have wires hanging out of them. If it were for my own personal use then I could deal with that- but these aren't for my personal use. look around

BTW, I have purchased sample items directly from Chinese manufacturers in the past via the Alibaba site. But I can't seem to locate these there. If I could I would have already bought at least one "sample".
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Last edited by parrish November 28, 2009 at 07:48 PM
#58
Quote from parrish View Post :
I'd be willing to pay up to around $40 or $50 for each supply. And I do understand the wholesale price is much lower than that- but I'm not going to buy 100. Also, I don't care about the warranty either. But I do care about the supply fitting inside the case without serious modification- in other words I need it to appear as though nothing at all has been done to the monitor- so no cutting of the plastics, relocating the AC plug, etc. And definitely NO external power supply!

If anyone must know why- it's because we are a computer store and are trying to get these monitors repaired so we can resell them as used. I can't do that if they are all cut up or have wires hanging out of them. If it were for my own personal use then I could deal with that- but these aren't for my personal use. look around

BTW, I have purchased sample items directly from Chinese manufacturers in the past via the Alibaba site. But I can't seem to locate these there. If I could I would have already bought at least one "sample".
These are not on Alibaba, but on taoboa (sp?) ...read thru the thread, I think I stated that. Can you purchase from them? I think they are affiliated some how. The link where I found them had a link which very much seemed like they were related.
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Last edited by wasabi_fu November 28, 2009 at 08:23 PM
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#59
BTW, the substitution linked is fitting inside the case with "no cutting of the plastics, relocating the AC plug, etc".
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#60
Quote from qwe1234 View Post :
BTW, the substitution linked is fitting inside the case with "no cutting of the plastics, relocating the AC plug, etc".
It would be nice if we knew what part number that was, so we could find a vendor/pricing.

*nevermind, the replacement may not be a good one due to price (see attached screen shot) - and not to mention the enormous amount of heat.
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Last edited by wasabi_fu November 28, 2009 at 10:12 PM
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