issue need to purchase power supply inverter board, where can i buy or go to find one also what is the part #? Thanksissue need to purchase power supply inverter board, where can i buy or go to find one also what is the part #? Thanks
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Re:
Hi,
Try this link
http://www.pchub.com/uph/category/43/LCD-Inverter.html
In some instances inverters for other brand/model will also work for your Mag. You just have to match the part number.
Good luck and kind regards.
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The first step is to check the fuse on the power supply board. Next,
disconnect the inverter board to eliminate the possibility of it
shorting down the main and or power boards. Be careful as the inverter
board supplies high voltage to the cold cathode tubes (backlights) and
it bites HARD. If you disconnect the inverter and the power led comes
up then replace the inverter board. (The screen will appear blank
because you have no backlighting). If the power indicator still fails
to light you need to suspect the main board first before the powwer
supply board. The main board tells the power supply board to come on.
You need to check the trigger from the main board to the relays on the
power supply board. Also check the power connector to the main board
because you should see +12V and/or +5V on at least some of the pins. If
no power on the relay triggers then replace logic board. Then replace
Power supply board last. Or buy a new monitor!!
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also. http://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net
Is the green light on (still indicationg power?
Ist put your ear to it and switch on - hear any buzzing?
Most like the HV Fluro Inverter for the lamps has an issue. For some the 2SC5707 may have gone - common.
Based on your post/description, I will initially suspect the inverter and/or the CCF Lamps since as you
posted "dim screen picture" indicating that there is ** backlight(s)
and/or it is **t receiving power from the inverter.
If the unit is
relatively new and under warranty, it may be to your advantage to have
it replaced or seek the services of their Service Center. Should you
want to do a DIY, it would be required that you be familiar with
electronic circuitry and components, use of a DVM and a soldering iron
and access to a service manual or at least a schematic diagram.
Incidentally, there are k**wn cases where similar issues could be resolved if you try lowering your display properties (resolution and refresh rates) but that would also include the powerlight changing colors.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Below is a re-post of my response to similar issues.
...Based on your post/description, I will initially suspect the inverter and/or the CCF Lamps since as you posted "dim screen picture" indicating that the backlight(s) are defective and/or the inverter is not supplying (sufficient) powere to the lamps.
If the unit is relatively new and under warranty, it may be to your advantage to have it replaced or seek the services of their Service Center. Should you want to do a DIY, it would be required that you be familiar with electronic circuitry and components, use of a DVM and a soldering iron and access to a service manual or at least a schematic diagram.
Incidentally, there are known cases where similar issues could be resolved if you try lowering your display properties (resolution and refresh rates) but that would also include the powerlight changing colors.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages. Good Luck!
this is a MAG computer model LT982s 900p
issue need to purchase power supply inverter board, where can i buy or go to find one also what is the part #?
Thanks
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