Products > Test Equipment
LeCroy WaveSurfer 24MXs-B Motherboard
tppc:
--- Quote from: nctnico on May 29, 2022, 09:09:26 pm ---Measuring 8 Ohm on a supply rail can be OK; it is not out of the ordinary. Again: first determine 100% which component (motherboard, CPU or memory) is actually faulty through elimination. Guessing leads to destroying good components.
--- End quote ---
OK, thank you for this information :-+, I thought it was too low. :-//
I will follow your indications and find a way to test CPU + memory.
Thanks. :-+ :-+ :-+
nctnico:
With a working motherboard, you can also check supply voltages around the CPU and compare with your non-working board. Don't stick the 'new' CPU into the non-working motherboard immediately; use it to collect data on the working motherboard first.
zhongzuocheng520:
Hello friend
I have a 44MXI-B fault that has not been resolved, but I have found a circuit diagram of the motherboard that is not customized. I hope it can be repaired. I hope this can help you
coromonadalix:
the mainboard is supposed to be an BCM MX945GME-LC Notice the LC ending, it's because of the pc104 interface, Custom board made for LeCroy .... seen that on some threads
The best bet would be to find a BCM MX945GME no lecroy variant and use an pci to pc104 converter
like this ??
https://www.winsystems.com/product/pci-ppm/
https://connecttech.com/product/pci-to-pc104-plus-adapter/
Ans if the coin cell batterie dies on some scope, the modo settings are lost and when the board boot youll get many errors, if you mobo still boot
And i think you are going too fast to check this and that, the psu is always the prime suspect, check if you can find the psu pinouts, and normally you are supposed to get an always present voltage, IE: a 5v standby or some rare instance an 12v
The best would be to get an Intel 945 motherboard and try on it your cpu and ram
This is a BCM EOL warning in 2011 ???
https://www.bcmcom.com/e-ad/eletter_07282011_MX945GME_Last_Time_Buy_notice.htm but i think it is the normal version
your bet will be to find a board who goes there, with an pc104 adapter and restart everything, if you dont have hidden problems elsewhere,
find the drivers etc ....
For a start you should clone the drive before any attempt
If you search BCM MX945 on fleabay, you have some results of normal motherboards, it could be a start and try to build something ou of them
The best and only one low priced 100$ is this : https://www.ebay.com/itm/255581180240?
If you search MX945 motherboards you have more of them starting at 50$
You are for the long run if the motherboad is dead, and a pci to pc104 adapter must be sold $$
ddrl46:
A while ago I had a Lecroy 44Xi-A which wouldn't boot either with similar symptons to your unit. Turned out to be a bad RAM stick in that case.
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