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Hi,
where can obtain informations about valid marking of the chip L293NE 75CE71M ?
The board is assembled externally and I supect a countrefeit because about 3% of mounted chips are not working and the logo and fonts are differents from the past.
The main defect is like a short between one (or more) inputs and 0V or the power supply.
Replacing the driver make the board working good, so others parts and pcb are ok.
Our standard production requires about 900 drivers/month and we don't have never see this problem.
Thanks
Hi Roberto,
Since Jim has responded with instructions, this post will be closed. If you require more information, you can reply to the post. If the post is locked, please select "Ask a related question" at the top right of the post.
Roberto,
Fir any further questions please respond to the counterfeit distribution list in the previous post.