ATTEN ATF20b mainboard full failure

[mbdemello]

Hi fellows!!  I have an ATF20b since 10/2012 and yesterday it was running well when the (both, A and B) output dead. The control panel is working well but there is no output, neither a little rf noise or some DC level, nothing!! I checked the mainboard's DC  supply  (5V, +/- 15 and others) and it seems ok. I checked  the mainboard outputs (A and B) and they are completely dead too!
The only information about the conditions during the failure is that it happened when I was using the "A" output ,  in open circuit (no load) at 10.0 MHz.
Someone already heard about  this kind of failure?
We don't have Atten service here in Brazil, do you know if is possible to find a ATF20B's circuit diagram or any kind of information?

Thanks and regards!
=====
Some (bad) News!

Today, after several tests,  I realized there was no clock in the AD9708AR, then the FPGA was not sending the clock signal.  Next I turned off the generator,  freezed the FPGA (using a freezing spray),  turned it on, the FPGA put the 100.0 MHZ clock in the D/A Converter, the generator works fine for three or four minutes and fail again. I repeated this procedure three times and then I think there is no doubt the failure is in the FPGA Cyclone I!  And now?  What is you opinion?  Do I need to replace the entire mainboard?

Thanks again!

[(In)Sanity]

Sorry to hear your ATF20b died.   Might I suggest an easy remedy to your pain and suffering ?   It would involve finding the nearest round receptacle of a proper size removing it's lib and forcefully tossing the AT20b inside.  Follow this process with proper closure of the lid and set down on the curb for collection.   After that process is complete I would suggest finding a better suited alternative.

I'm thinking I may need to do do some ESD testing on the one I have to see how well it conforms to industry standards   I at least manged to get an accurate clock out of it by replacing the 20 mhz clock can with an adjustable TCXO. 

Jeff

[Fraser]

I would consider dry solder joints as a possibility before scrapping the unit. Some decent liquid flux and the application of a hot air station output may rectify the situation for you. I am meeting dry points in FPGA and especially BGA formats a lot at the moment. Most have failed as the IC temperature rises, and rectify themselves when freezer spray is applied.

Worth a try before giving up on it.

Aurora

[(In)Sanity]

It's a shame really,  the hardware isn't really all that bad.  The non upgradable firmware just cripples an otherwise usable device.  It could be a decent device if it wasn't for the terrible coding behind it.  Ohh well.

In any event,  might as well look for solder joint problems,  certainly wouldn't be the first time a product had that problem.

Jeff