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[Problems & Solutions] CrossOver, Catleap, Qnix, Shimiam 27" 2560x1440 Monitors bought ONLINE - How long did it last? - Page 2

Poll Results: Which monitor brand did you get for the 27" 2560x1440 monitors

 
  • 32% (14)
    CrossOver
  • 11% (5)
    Achieva Shimian
  • 0% (0)
    CatLeap
  • 0% (0)
    Yamakasi
  • 51% (22)
    Qnix
  • 4% (2)
    Others, please specify in thread
43 Total Votes  
post #11 of 44
Can you take a high-res photo of the new, and the old board? If you don't have a good camera you can scan it in a flatbed for decent results usually.
I'm an electronics engineer so this is the kind of thing i design, maybe I could post a solution that could easily be implemented, just incase it happens in the future.
post #12 of 44
Thread Starter 
Quote:
Originally Posted by i1magic View Post

Instead of just waiting, I've take a closer look at the blown component :



Part No : 18T10GH

Read somewhere that it is a N-channel MOSFET.

I search locally near my area but couldn't find any shop carrying this component. Seriously, I would be surprised if they did. LOL!!

So I Googled it and found that they are selling 5pc @ about USD$7 at Aliexpress :



http://www.aliexpress.com/store/product/AP18T10GH-18T10GH-TO-252/719408_843586295.html

Since I have soldering iron and I did soldering before, I ordered the "18T10GH" component and I will attempt to replace it myself.

Now waiting for the component to arrive.

I've received the above item from Aliexpress on 24 Mar 2014.

Then I proceed to solder and replace the component on the PCB. Plug the PCB back to the monitor and it WORKED!!

Just after running for awhile, I can feel that the chip is really hot. So for those who wants to continue to use this, it would be advisable to add a heatsink to help dissipate the heat.
post #13 of 44
Quote:
Originally Posted by i1magic View Post

The seller of my monitor finally sent the LED driver board to me. Took about 2 weeks.

Once I plug it in, the monitor is revived!

They sent me a green coloured PCB LED driver board.

May I ask who your seller was? AccessoriesWhole just told me today the green all-in-one board has been discontinued and I can't get a replacement.
post #14 of 44
Thread Starter 
Quote:
Originally Posted by damnseagulls View Post

May I ask who your seller was? AccessoriesWhole just told me today the green all-in-one board has been discontinued and I can't get a replacement.

I got it from "Green-Sum".

Are you using the CrossOver 27q also? The one with white backing and black bezel?
post #15 of 44
The reason it is getting warm is due to the high Rds ON, 130 mOhms is brutal.

For example, here is a fet I found after a quick search on digikey. Has the same package and pinout, proper VDS max, etc, but a much lower RDS ON, nearly a quarter at only 40 mOhms.
http://www.digikey.com/product-detail/en/AOD482/785-1224-1-ND/2353942

44 nanocoulombs compared to 16 though, so I am not sure if the driver ic could handle such a high gate capacitance.

Instead, this guy seems to be the best match while having a slight increase in gate capacitance while lower RDSON.
http://www.digikey.com/product-detail/en/FQD19N10LTM/FQD19N10LTMCT-ND/3042602

Shipping from digikey should be cheap as heck regardless.
My old rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 680i BFG MSI 570 gtx (stock) 2*2GB, 1*1GB 
Hard DriveOptical DriveOSMonitor
Hitachi 1TB some cheap dvd-rw drive Windows 7 Ultimate SyncMaster 2232BW 22inch 
KeyboardPowerCaseMouse
G15 750watt No name Logitech MX 518 
Mouse Pad
Invoice from Newark 
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My old rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 680i BFG MSI 570 gtx (stock) 2*2GB, 1*1GB 
Hard DriveOptical DriveOSMonitor
Hitachi 1TB some cheap dvd-rw drive Windows 7 Ultimate SyncMaster 2232BW 22inch 
KeyboardPowerCaseMouse
G15 750watt No name Logitech MX 518 
Mouse Pad
Invoice from Newark 
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Reply
post #16 of 44
Quote:
Originally Posted by i1magic View Post

I've received the above item from Aliexpress on 24 Mar 2014.

Then I proceed to solder and replace the component on the PCB. Plug the PCB back to the monitor and it WORKED!!

Just after running for awhile, I can feel that the chip is really hot. So for those who wants to continue to use this, it would be advisable to add a heatsink to help dissipate the heat.
do you think the other new models (black and bottom white bezel) from crossover will suffer from this as well? i've been thinking about the 2755AMG but i had my concerns about the failure of crossovers over time compared to other korean brands.
Edited by doco - 3/30/14 at 7:54pm
    
CPUMotherboardGraphicsRAM
i5-2550k @ 4.5GHz - 1.375v Asus P8Z68-V Pro/Gen3 EVGA GTX 980 Corsair 8GB Vegeance DDR3-1600 1.5v 
Hard DriveHard DriveHard DriveCooling
Crucial 128GB SSD Two 2TB Samsung F4 HDDs 3TB Toshiba HDD Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 7 x64 Ultimate QNIX QX2710LED Achieva Shimian QH270-LITE Ducky Shine II Brown MX Switches w/ Green Backl... 
PowerCaseMouseMouse Pad
Seasonic X750 Corsair 400R Logitech G500 Steelseries 
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CPUMotherboardGraphicsRAM
i5-2550k @ 4.5GHz - 1.375v Asus P8Z68-V Pro/Gen3 EVGA GTX 980 Corsair 8GB Vegeance DDR3-1600 1.5v 
Hard DriveHard DriveHard DriveCooling
Crucial 128GB SSD Two 2TB Samsung F4 HDDs 3TB Toshiba HDD Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 7 x64 Ultimate QNIX QX2710LED Achieva Shimian QH270-LITE Ducky Shine II Brown MX Switches w/ Green Backl... 
PowerCaseMouseMouse Pad
Seasonic X750 Corsair 400R Logitech G500 Steelseries 
AudioAudioAudioAudio
Gustard H10 Headphone Amplifier Audio-Technica AD900X HE-560 Headphone Sennheiser HD 650 
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post #17 of 44
Thread Starter 
Quote:
Originally Posted by doco View Post

do you think the other new models (black and bottom white bezel) from crossover will suffer from this as well? i've been thinking about the 2755AMG but i had my concerns about the failure of crossovers over time compared to other korean brands.

The one that I got is this.





I got 2 of them on around May 2012. One of them has flickering problem in mid Jan 2014 and failed in end Jan 2014. After communicating back and forth with my seller "Green-Sum" and confirmed on the PCB to send, it cost me USD$45 to get them to send the LED Driver board over.
post #18 of 44
Thread Starter 
Quote:
Originally Posted by hak8or View Post

The reason it is getting warm is due to the high Rds ON, 130 mOhms is brutal.

For example, here is a fet I found after a quick search on digikey. Has the same package and pinout, proper VDS max, etc, but a much lower RDS ON, nearly a quarter at only 40 mOhms.
http://www.digikey.com/product-detail/en/AOD482/785-1224-1-ND/2353942

44 nanocoulombs compared to 16 though, so I am not sure if the driver ic could handle such a high gate capacitance.

Instead, this guy seems to be the best match while having a slight increase in gate capacitance while lower RDSON.
http://www.digikey.com/product-detail/en/FQD19N10LTM/FQD19N10LTMCT-ND/3042602

Shipping from digikey should be cheap as heck regardless.

Wow! Good info. I did studied electronics before but never really do work on it. So don't know about all this specification.

Can I just swap that component with either one of the two your posted and it'll not be as hot?
post #19 of 44
I am unsure if the driving circuitry on the board can handle enough current to switch the fet in the first link, but the fet in the second link should be a simple swapping of components.

And yes, it should not be as hot, with the first link being much cooler than the second.
My old rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 680i BFG MSI 570 gtx (stock) 2*2GB, 1*1GB 
Hard DriveOptical DriveOSMonitor
Hitachi 1TB some cheap dvd-rw drive Windows 7 Ultimate SyncMaster 2232BW 22inch 
KeyboardPowerCaseMouse
G15 750watt No name Logitech MX 518 
Mouse Pad
Invoice from Newark 
  hide details  
Reply
My old rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 680i BFG MSI 570 gtx (stock) 2*2GB, 1*1GB 
Hard DriveOptical DriveOSMonitor
Hitachi 1TB some cheap dvd-rw drive Windows 7 Ultimate SyncMaster 2232BW 22inch 
KeyboardPowerCaseMouse
G15 750watt No name Logitech MX 518 
Mouse Pad
Invoice from Newark 
  hide details  
Reply
post #20 of 44
Quote:
Originally Posted by i1magic View Post

I got it from "Green-Sum".

Are you using the CrossOver 27q also? The one with white backing and black bezel?

Yes. With the swivel-stand.
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Overclock.net › Forums › Components › Monitors and Displays › [Problems & Solutions] CrossOver, Catleap, Qnix, Shimiam 27" 2560x1440 Monitors bought ONLINE - How long did it last?