cpresser

#RepairOfTheDay is this super expensive FPGA dev board (HTG940) we have at work.

One of the clock generators was bad, most likely due to misconfiguration. We are not sure.

So I hat to pull it and solder in a new one. This board has so many layers, getting heat in was super hard. I did use a 1.6kW heat gun to 'preheat' and then the normal hotair to remove the chip.

The new chip was soldered in with low-temp-paste. The normal hot-air barely had enough power for that.

Test is still pending...

May 20 at 1:32pmWeb
Show threadcpresserMay 20
The chip also has the best pinout. Thank you Texas instruments.
Show threadich war hierMay 20
@cccpresser easy! 2 vías only 😃
Show threadLukasMay 20
@cccpresser This oscillator probably evolved from its non-programmable relatives that have a normal 6-pin pinout and they just stuck on the extra I²C pins in the available space.
Show threadcpresserMay 21
@karotte can you please tell me the part number of that one?
Show threadhanserMay 21

@cccpresser @karotte

it's written in the alt-text:
https://www.ti.com/lit/ds/symlink/lmk61a2-312m.pdf

Show threadcpresserMay 21

So the repair was a success.
The new clock generator can be programmed and outputs a nice sine wave.

The FPGA Gateware also runs as expected - minus some unrelated bugs.