10-28-2015 12:37 PM
Hi, this post is something of a forlorn hope, but nevertheless I think the forum is worth a shot in this moment of dispair.
We have two USB 6229 devices that are being reconfigured for a new purpose. In mounting them they have become damaged, and I wish to repair them.
To mount the devices in an enclosure the rubber feet were removed and mounting screws were screwed through the threaded holes this exposed. Unfortunatly the new mounting screws were of excessive length and as they were tightened they ground into the circuit board.
In three locations this caused a small amount of track damage which we can repair. But in the fourth location the screw has ground into a surface mount resistor, destroying it.
We have similar USB 6221 devices, and I have stripped one, but there is no identifying mark on the (very small) resistor.
The component in question is R141.
Before I try and remove R141 from my USB6221 to measure it's value, can anyone supply information on the value of the resistor to enable me to conduct the repair?
I look forward to any help you may be able to provide,
Regards,
Bandit.
10-30-2015 10:46 AM
Further to the above message, if anyone is daft enough to make the same error, the resistor on the USB 6221 measures 100K. I checked this both on and off the board, and the remaining board circuit connected in parallel makes no measurable difference. Re-fitting the resistor is quite a challenge, so if you need to check one measure it on the board, don't remove it!
Bandit.