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发布于:2018-7-26 08:59:17  访问:272 次 回复:0 篇
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Electronic Projects
5. Drilling - the entire process of drilling all the holes for plated through applications; a second drilling process is useful for holes that aren`t become plated through. Information on hole location and dimensions are contained in the drill file that is drawing.
6. Plating - the process of using copper plating towards the pads, traces, and drilled through holes which can be to be plated through; boards are put in an electrically charged shower of copper.
7. Second Drilling - that is required when holes are to be drilled by way of a copper area nevertheless the opening isn`t become plated through. Avoid this process if at all possible because it adds expense to the finished board.
8. Masking - the process of applying a protective masking product, a solder mask, throughout the bare copper traces or over the copper who has had a slim layer of solder applied; the solder mask protects against ecological harm, provides insulation, protects against solder shorts, and protects traces that run between pads.
To be aware of electrical tools and electrical tools, check out our internet site DIY electronics.
I will inform you that around 40 per cent of total defective monitors are easy to be fixed generally and also the sleep is really a bit time consuming but it is well worth to perform electronic component evaluating, evaluating and replacement. Once you got at fault, you solder it away and replace the new part and solder it straight back on the circuit board.
Perhaps one of the most crucial and crucial techniques in servicing lcd monitor is the SOLDERING strategy which will bring you fast dollars effortlessly and quickly. I think most repairers will agree with me.
Let take few real soldering examples as follows:
Case 1: Compaq FP731 shutdown from couple of seconds to minutes that are few
Solution 1: Re-solder the feedback circuit of the inverter that is ccfl C215, C216, D201, D204, R215, R246, R218, D206, C242, D210, R234, R243
Instance 2: BenQ T705 got display shutdown after power on for few 2nd
Solution 2: Solder away 4 nos. shorted C5707 transistors and solder new transistors back.
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