Samsung 713N LCD Restoration with SE7889-Lf ic Issue
This Samsung 713N LCD keep an eye on came in with no show symptom and no electrical power. In other phrases, when you switched ‘on’ you could see the power LED lights up (no display) and then for couples of seconds the electrical power led light goes off. When I removed the signal cable and switched ‘on’, now I could see the examine signal cable OSD appeared at the display. This proved that the inverter board, lamp and power offer is working. Yet again, I plugged in the signal cable, the show and power LED light went off.
Soon after opened up the cover, I check the on/off signal from the mainboard to the inverter board. With signal cable in, there was no on/off signal to the inverter board but when the signal cable was disconnected, you could see clearly from your meter there is a on/off signal going into the inverter board hence the screen appeared with the check signal OSD existing at the screen. From this examination, it is really apparent is the main board dilemma.
To validate whether is the principal board dilemma, you have to use a equivalent Samsung 713N product to affirm it. Genuine adequate, after substitution with a acknowledged excellent board, the keep an eye on is alright. So now we can confirm is the mainboard defective. The genuine issue now is at wherever we can discover this board or the suspected part range SE7889-LF ic for substitute? Checking the parts adjoining the SE7889 ic yield no consequence.
As described in previous content articles, to troubleshoot LCD keep track of is simple but to get the portion is a tiny bit difficult. Samsung don’t sell you the mainboard, if you mail to them for fix, they will cost a quite higher value which is not really worth to repair.
As I’m writing this report, I nonetheless could not track down the suspected ic, but if I found it I will permit you all know. Samsung 510bn lcd monitor also have this variety of problem which is the mainboard spoilt.
Although in this article I could not pinpoint to you the specific defective component, at least you would use my process to confirm which board is supplying difficulty. In other words, whether or not you are troubleshooting the Samsung 713N LCD keep track of or other brand, the screening technique is the very same.
