Where to buy a 12V 3.0A output power supply for a TFT monitor

Hello,

The most common cause of that type problem is a failure of the filter capacitors on the power supply board. There are 7 capacitors that filter the output voltages from the board and when they start to die the power supply board can not start correctly. When you let the unit sit for a while they can finally build up a charge and allow the board to power up the monitor. The worst they get the longer the time will take to get a picture until one day - No picture at all. The board is easy to repair, you will get need to remove and replace the bad capacitors on the board. Here is a link to information showing where the capacitors are located on the board and the values needed to replace them.

www.ccl-la.com/catalog/product_info.php?products_id=100

I hope this helps,
BuddyMc

I guess you could be looking for something like these
http://www.coywood.co.uk/lcd-power-supply-flat-screen-mains-adapter-adp-65db-12v-7a-2222-p.asp
http://www.power-adapters.co.uk/12v-dmtech-4-pin-power-supply-adapter-p-4668.html
http://ezlaptopadapters.com/12v-7a-4-pin-power-supply-adapter-p-4006.html

Go to www.partstore.com for a new power supply.

the first thing you need to do is to check whether your power supply is working well.to do this, you need to open the back cover of your tv ..you can immediately reach the power supply.test the power output using a multitester.there must be an output of 5v,12v,and24v.24 v is for the screen to lit up..5v is for the the cpu supply..12v is for the audio...You can repair the power supply if it is not functioning or buy a new power supply..to repair the power supply repace the regulator transistor,the opto isolator,the ic that gives the signal to the opto isolator and check for open resistor near the regulators..hope this could help.goodluck!!

how about the plug size, normally, it comes with 2.0/2.5mm?? it looks like 15" lcd monitor and i think it is compatible with 12V 4.0~5.0A.

have the switching power supply checked or might need a replacement

The power supply has most likely gone out. Check for 12v and 5v output and also the solder arround d903 and d907. The site www.lcdrepair.us sells the part as well as a repair kit and has instructions.

jim

my supply has the following specs.
LIEN CHANG
BSA-35-115
AC input- 110-240v 1A  47-63Hz
DC output 10-17v  3.5A
Nom. V 12v
Nom current 2.9A
output power 35A max.

With this you can likely find a universal "brick" that covers your needs

Jay

So the old power supply doesn't have the output voltage, current and polarity noted on the label? What a ripoff! *grin* Did you look on the case near where it plugs into the monitor? Sometimes that will tell you the voltasge and polarity. Poliarity? Get that one wrong and the monitor could be cooked instantly! But it's usually positive. I found a completed eBay listing that had this info: "the power supply which the seller used to power up this Planar Flat Panel is inventoried as follows: ViewSonic 12V Power Adaptor Model # SYS1126-5012" I looked that one up, and it's listed as 12V at 4.17A. PC Hub has them for $28.62: http://www.pchub.com/uph/laptop/345-19804-2285/AC_Power_Adapter_5V-12V_Others_SYS1126-5012.html Good luck!