Question about Samsung SyncMaster 913N 19" LCD Monitor

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Y have one problem my monitor. The transistor q2 to Screen PCB is damage.Please, how type is this transistor? Best regards!

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You can download service manuals here: http://elektrotanya.com/?q=showresult&megnev=SAMSUNG&megnev2=913N&kategoria=&kat2=all
2 downloads per day.
Please send me pictures so I can look at them also.
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Posted on Apr 22, 2010

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You should direct your attention to the East/West correction
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Have you replaced the IC , Q2 and Q2?

• Check the Differential Inputs ( IC1 ) and sorrounding components


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I brought my benq t701 to a repair shop to due blackout screen. But due to lack of parts, it was not repaired but all 6 transistors were removed from the PCB. Please show me where these transistors were...


go to esservice.com and get the manual from there will be easier as the transistors are directional i believe they are 2sc5707s from memory but you will need to check the transformers and the 2 filter caps on either side of them as if they are faulty will blow transistors.

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On your CRT back PCB thers three transistor on for red green and blue its possible that your blue transister is faulty. Try moving your cable see if the colour changes it can also be a faulty 15pin plug
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Hi,

Initially, pls check D854 on the Power Supply/Logic board. It is a dual diode. If you would prefer board replacement rather than component level repair, this might be of help. This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

This is of course in addition to checking the usual, power cord, fuse, outlet etc.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

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Resolder the power transistors on inverter board and also check them.If display is not there at all some of this 4 transistors C5707 should be defective.Check associated fuse and Fet which drives the transistor.

Also check with Benq ,Normally offers three year warranty.

Samir

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Horizontal and vertical adjustments


Check components related with pots thats adding command ic to pots.If they are ok then change command ic with new one.Before this you can check horizantal hold transistor that is placed on hitsink of eht.small in size and check two small transistor placed near it on pcb.Hope this solution works .If not then i am here

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Hi Rey,

Hope this helps you like what I did to resolve this kinda problem. If you can manage to open the chassis/cover check first if the HOT (horizontal output transistor) is good, if good check the SMPS (switching mode power supply) primary and secondary side if there are short filter capacitors, diodes, transistors and open resistors. Major faults to consider is by checking the load of SMPS, control circuit, driver circuit, feedback ckt.

Please let somebody to assist you (a certified technician) how to open the chassis safely due to electric shock. Please be guided accordingly.

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replace new moitor....

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Regarding L1515S 15" LCD Monitor Resolution


Hello mallik, The LCD monitor is actually a active matrix of small transistors (3 for each pixel). They have one native resolution, a FIXED one for example you monitor has 1024 x 768 pixels. This results in 786432 pixels displayed on the screen. Because each pixel is controlled by 3 transistors there will be 2359296 transistors controlling your entire screen. This is a fix number. You can't raise the resolution to 1280 x 1024 because this will require as you can see now... a lot more transistors on the same surface. All you can do is to lower the resolution, in this case 4 pixels (12 transistors) form a larger pixel acording to that lower resolution. The image can look blurry in these situations. THe bottom ideea is that a LCD pannel (more corectly said, TFT (thin transistor film) pannel, has one optimum resolution, it's native one. The higher the better, when choosing one to buy, but you can't raise the resolution over that. You can just lower it. It works different then the normal conventional CRT monitors. Sorry for my bad english as I live in a non english-speaking country. Also if you have anymore questions please post a comment.

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