I reread your statement and wanted to clarify a point.
Re: "But the memory test also relies on UBOOT to at least get started."
The thing is, I am uncertain that memory test actually started as the rapidly flashing
POWER LED is used as an indication of many different events (unfortunately)
and may not mean memory test has started but that some error/event has occurred
not directly related to memory test.
I think @Sandshark is agreeing with you here - he's saying that the memory test relies on UBOOT, and if that isn't functioning, then the memory test might not have started.
Re: RN102 unresponsive after initiating FW update from 6.10.6 to 6.10.7
Yes, I am saying that both the memory test and normal booting could be adversely affected by a corrupted UBOOT. A USB recovery is what I believe you should try next.
Re: RN102 unresponsive after initiating FW update from 6.10.6 to 6.10.7
Folks, I'm willing to try anything to resurrect this unit. What are the chances of acquiring the necessary software / hardware documentation, including any debugging fixture details, to fix this thing?
Re: RN102 unresponsive after initiating FW update from 6.10.6 to 6.10.7
@btwixt wrote: Folks, I'm willing to try anything to resurrect this unit. What are the chances of acquiring the necessary software / hardware documentation, including any debugging fixture details, to fix this thing?
There isn't really much that can be repaired. The chips aren't socketed (both memory and the CPU are soldered to the system board).
One easy thing - we never completely ruled out a power issue. You could try connecting a power brick from one of the replacements you purchased, and see if the system boots normally. Best to use a spare disk of course.
Re: RN102 unresponsive after initiating FW update from 6.10.6 to 6.10.7
In reply to StephenB:
Re: There isn't really much that can be repaired. >With respect, Steven: >This is, and always has been, a matter of will instead of capability. >There are many surface-mount-capable repair facilities in the US. >A local (to me) facility is even FAA and MIL-STD-2110/2111 approved. >I doubt the Marvel chip is at fault (but even if it were, it is replaceable) >and that leaves all the relatively easy stuff. >The REAL obstacle would be getting hardware documentation and
>possibly sourcing parts. And that would be a matter of will also.
Question about Marvell ARM chip:
Which one, exact part number please, does this unit use?
I would like to know if it is an SOC device with flash memory.
Re: power issue >Tested, measured (both inside & out of failed unit), and substituted. >I actually have four supplies to "play" with. All are 90W to 120W units, >and very quiet from an electrical noise standpoint.
I am waiting for a reply on another post regarding testing the only thing I haven't tested, the serial port. If the serial port yields nothing, I am off in search of documentation.
FULL DISCLOSURE: At some point while inspecting the insides of the failed unit I discovered the battery was at 1.98V. I used a fixture to keep battery voltage applied to the board while I replaced the battery. Even though the original battery was in this poor condition during the OS update the RN102 was always on a UPS and never lost power.
Re: There isn't really much that can be repaired. >With respect, Steven: >This is, and always has been, a matter of will instead of capability.
Not convinced that the cost of repair is worth what you'd get. We're talking about a 9 year old entry-level NAS. But if you want to give it a try, of course you can.
Re: RN102 unresponsive after initiating FW update from 6.10.6 to 6.10.7
Few users have the equipment to de-solder and solder ball grid array parts. Many of the parts cannot be purchased in small quantities. And just figuring out what part(s) need to replaced is going to be quite a task without a schematic. The board most likely won't hold up to just replacing things until it's fixed.
Even Netgear doesn't repair them.
So, at least for most, it is a matter of capability, not will. If you have the appropriate equipment and skills needed, then go for it and please share whatever you learn with the forum.
