Products > Test Equipment
Upgrading Mainboard in Lecroy DDA-3000 (aka WavePro 7300a?)
DaJMasta:
Yeah the PSU is an option, just a lot of digging around in the scope to physically pull it, and I would have expected some error messages or unpowered caps on the bottom side if that were the case - nothing that I could find.
Will give reseating a chance, the acquisition board is already out so it should be straightforward enough.
DaJMasta:
Finally got the time to work through it, first tried reattaching all the cables to the acquisition board - no luck, then tried swapping the PSU... which is a chore, a couple dozen screws, a bunch of parts pulled, a tight space in the metalwork to deal with connectors, and even the PCI cards need to be unscrewed because their bottom retainer is holes in the top of the PSU. After all of that, the PSU wasn't the problem either.
So I pulled the ADC boards and then cleaned the signal distribution board - it had some dust that left a grey residue and took a few passes to clean off - and it acquires normally and passes the hop cal now! I've still got a little of the front panel light blinking for whatever reason - they're mostly good but adjusting a knob too far (timebase, channel offset, or some of the bottom row controls), it will make a bunch of the lights reset and act wonky for a bit, but it will reset and operate normally a lot of the time. Tried reinstalling the driver package again and it.... maybe helped? But it's not all the way fixed yet, so I'm not totally sure how to fix it beyond that. Maybe a full scope software install is in order.
Anyways, here's the signal distribution board for a WavePro 7300A:
ollopa:
It seems I stopped getting notifications for my watched threads :(
Yes, I did get the AIMB-581 and NEC NL10276BC20-04 LCD working with a direct connection, but I had to request the generic BIOS from Advantech and acknowledge that I was responsible for it if it broke. My MB was pulled from some industrial machine with a custom BIOS and altered LVDS settings. With the unbranded BIOS I was able to select the correct configuration for the LCD.
The Chrontel utility sounds quite useful. Where can I get that? Will somebody post or PM a link please?
Converter:
I put Chrontel utility in Google Drive:
https://drive.google.com/file/d/1Wzmiiqt5ojzX7m3ZZvUnri1-ILOMH1bV/view?usp=sharing
As well as a standard BIOS for the AIMB-582QG2 motherboard (extracted from 24L6435E EEPROM):
https://drive.google.com/file/d/1huCDEH3lqOrcf_Ya-46U06flwSSFxZac/view?usp=sharing
DaJMasta:
Got my front panel working properly again, and it was another tip in this thread that started me down the right path, though the solution took a bit of chasing.
Basically, if you are running XP and a Hyperthreading enabled CPU in the original board (or perhaps others), the front panel can have intermittent errors, updating with garbage LED data occasionally with some actions. This doesn't effect the input, but the output can be distracting or misleading. I had the most recent windows XP 32 bit compatible XStream software and installed the aladdin board driver pack for it, but was still getting problems. I read there were some SMT related errors with the drivers so I disabled hyperthreading in the BIOS, but while the front panel was fixed, whenever I moved the trigger level I got a huge lag - multiple seconds in some cases - which basically made the knob unusable even though it did function.
The solution to the trigger knob lag was an 'upgrade install' of windows with the original media, though a repair install or a complete reinstall would have done the trick. Basically, because of XP's method of keeping track of single vs. multithreaded platforms, they can't always be switched back and fourth with equivalent functionality. So since I had used a Hyperthreading for the initial install of XP on this machine, it was configured to be a multithreaded machine, and then when I disabled HT, it still ran alright, but it wasn't properly configured to handle things, and that manifested in the trigger delay issue.
In any case, the front panel shows the right lights, the software works, and the unit is acquiring again. Been sitting on a shelf for a couple of years after it had issues the first time, happy to have it running again!
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version