LED power driver

In fact, the principle of maintenance electronic screen is very simple, the unit board is powered on, and then the signal input can be displayed normally. Buy a universal meter to measure the voltage. If the unit board is abnormal, replace the unit board. If the power supply voltage is abnormal, replace the power supply.
Author:Cai qiuqing   Time:2021-09-13 14:36 Browse(null)
A. The whole board doesn't light up
Author:Yang Dong   Time:2021-09-12 11:20 Browse(null)
It's good to keep the direction of the lines consistent. The order is from right to left. There is a row of red lines on the lines, which can make all the lines face up in red or make all the lines face down in red.
Author:Li Pengtao   Time:2021-09-06 13:34 Browse(null)
The fault analysis and common treatment methods of LED display are analyzed
Author:Song Wei   Time:2021-08-28 14:37 Browse(null)
LED is called led for short. It is made of compounds containing gallium (GA), arsenic (as), phosphorus (P), nitrogen (n), etc.
Author:He Li   Time:2021-08-07 13:34 Browse(null)
1. The voltage of 5V is lower than 12V, so it will not burn
Author:Deng Xianmin   Time:2021-08-01 17:56 Browse(null)
Circuit board, led, 138, 245D, 4953, drive IC, capacitor, resistor, mask, bottom shell, bracket, magnetic column, waterproof glue, waterproof rubber pad, row pin, row wire, power line, power base, power supply, box, steel structure, control system (synchronous receiving card, sending card, adapter board; Asynchronous card)
Author:The fox is confused   Time:2021-07-04 09:06 Browse(null)
Working principle of LED electronic display screen
Author:Mr. li   Time:2021-07-04 08:04 Browse(null)
The steps of changing LCD to LED are as follows:
Author:Liu Qiong   Time:2021-06-16 12:28 Browse(null)
To judge a problem, we must deal with it in a primary and secondary way. The obvious and serious problems should be dealt with first, and the minor problems should be dealt with later.
Author:Chen   Time:2021-06-15 12:26 Browse(null)
LCD:
Author:fly   Time:2021-06-15 10:14 Browse(null)
To judge a problem, we must deal with it in a primary and secondary way. The obvious and serious problems should be dealt with first, and the minor problems should be dealt with later.
Author:Chen Dujuan   Time:2021-06-11 17:59 Browse(null)
to judge problems, we must deal with them in a primary and secondary way, the obvious and serious ones first, and the small ones later.
Author:Wu Qin   Time:2021-06-11 13:35 Browse(null)
To judge a problem, we must deal with it in a primary and secondary way. The obvious and serious problems should be dealt with first, and the minor problems should be dealt with later.
Author:Li Li   Time:2021-06-11 09:43 Browse(null)
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