Comments on: Confusing Circuit Board Marking

By: Jestine Yong

Jestine Yong — Wed, 05 Sep 2012 19:45:05 +0000

In reply to jumbe mateyu.

Hi Jumbe,

I have seen this problem also in CRT Monitor many years ago.

Jestine

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By: jumbe mateyu

jumbe mateyu — Wed, 05 Sep 2012 16:10:55 +0000

This is very true Jestine and it is common these days.I came across a faulty amplifier in which main transistors were marked BCE or Base,Collector and Emitter yet their part number showed that they were not bipolar transistors as indicated on the board but FET transistors,GDS and once I replaced them, the amplifier worked perfect .

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By: RD Electronics

RD Electronics — Thu, 30 Aug 2012 06:02:41 +0000

Hi,
I found some times marking letter is OK, but marking polarity on the board is wrong. So, I always look for the (-) on the electrolytic caps and I check the mark on the board, I don't want to make a mistake when I put the new one.

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By: Jestine Yong

Jestine Yong — Tue, 28 Aug 2012 16:27:28 +0000

In reply to jojogreg.

Hi Jojo,

Sometimes even the experienced repairer also have a hard time to figure it out.

Jestine

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By: jojogreg

jojogreg — Tue, 28 Aug 2012 15:59:52 +0000

i agree to you mr.yong,that's really make our lives difficult in recognizing that kind of labelling.I wonder why they make that kind of labelling,that's an additional headache in troubleshooting..

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