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[relaxxx]

After LPT flash of latest XBR it seemed just about every other time I booted up with E79 and then I had to go through setup.

Then I did the whole gentoo flash process and I write protected the NAND because I do'nt like the idea of my config being erased every time I boot to E79.

So now I dont have to unplug my HD and go through the annoying setup after E79 because my NAND config is safe but I'm sick of this E79. It seems to always happen on bootup after it's been off for awhile. Turn off and back on and it boots up.

I've eliminated everything but my Jtag as the cause of my E79 and I highly suspect my diodes are not 1n4148 switching diodes because I pulled them off of some junk board with no markings. They LOOK like the diodes in the picture but I know that doesn't mean much.

Without having the luxury of running to a shop to pick up proper diodes is there a way to tell diode type with a multimeter? I have a tester with diode setting that shows forward resistance and the ones I used are around 500.


I also removed the 10K ohm CPU fuse burning resistor and I wired my Jtag exactly like this:

(IMG:http://powermyhouse.org/jtag.jpg)

This post has been edited by relaxxx: Jan 15 2010, 02:26 PM

[Elspero]

The reading is around 570 (set it to the ->|- symbol), and it works one-way only (gnd in the pin with the black bar).

This post has been edited by Elspero: Jan 15 2010, 03:03 PM

[Roamin64]

There is no definitive way of telling if a diode is fast switching , or other type (zener, Schottky, rectifiying, etc) without having its number, or color code.

The diode test on your multimeter , is mainly to tell you if the diode is either shorted , open , or conducting in the right way. It will not tell you anything else about the diode. Especially not how fast it can switch (conduct and stop conducting)

E79 usually is bad jtag wiring. So it is very possible , that under certain circumstances, the diodes aren't acting properly , and frag your xbr.

Taking diodes from old electronics is not a bad move , but having the numbers on them is crucial (or color coded rings). Zener diodes will often come in a glass package so beware.. since zener diodes have very different properties and applications, and could damage your board (most unlikely, but possible)

Find diodes with numbers! If you can't find them in your junk, you could always try to call any sort of local store that has a repair service on place and talk to a technician over there, i'm sure they could part with 3 diodes, because even when you buy them one at time , you should never pay more then spare change for them.

[Big_Ted]

there seems to be a problem with the zephyr xbr 3 alot of people are reporting the same issues you have.

Ted

[alwaysdark]

It's 100% normal on Zephyr's. It's just XBR, no way around it. Be glad XBR v3 is out, XBR v1 was fucking horrible on Zephyrs.

Just wait for the next XBR update, there's nothing else you can do right now.

[relaxxx]

Thanks for the suggestions, I guess I feel better about using it if all xephyrs are doing this. It's fairly usable now with the nand write protected.