PVR510: "Flash timeout, DQ5 set"

[BGW]

Well, now I've done it!!

I installed a jtag in my PVR510 without a problem.
Using a jumper on OJ1, I successfully read and saved my TSOP chips with the jtag..... even erased and re-flashed without a problem.

So then, after a LOT of reading, I decided to do the 4-wire-2-trace-cut vid mod. I followed directions in "easzy 508 vid mod.zip" that's posted in the public downloads. The only difference I can see between the pics in that zipfile and my 510 board is that my board is red, with no R331 installed.

However, the first time I tried the vid mod, jkeys returned the following error:
"Flash timeout, DQ5 set".
Since then, I have double and triple-checked my wiring and trace cuts with a meter (and a magnifying glass), and I can't seem to find anything wrong.

When jkeys detects my board now, the IRD# and Boxkeys are all zeros. I haven't been able to successfully write to either TSOP chip again.
With the vid mod turned on, I get the "DQ5" error.
With vid mod off, jkeys writes 99% before stopping at offset 7FBFE000 (Flash 1) or at 7FFFE000 (Flash 2).
Has anyone had this happen before?
Any suggestions?

Regards,
BGW

[skinerd]

Sounds like th evid mod is not correctly installed......keep getting DQ5 and you'll smoke something......prolly put 12v where it don't belong.

[BGW]

Okay, back to the drawing board.........
I downloaded a datasheet for my TSOP (AM29DL323GT90E1) from here:

www.spansion.com/datasheets/25686b9.pdf[/url]

Now, from my limited understanding of what I read, I think our "vid mod" is supposed to apply 12v to TSOP pin 12 (RESET#), in order to allow us to change data in the protected memory sector.

Somebody please correct me here, if I'm wrong.

Apparently the directions I followed do not apply to my 510 board, because I don't get 12v at pin 12 when switching.

So, my plan now is to reverse the steps I have already taken and start over.
Hopefully nothing is damaged yet, and I'll figure out a way to restore the original data in these chips......
I'll post results when I have something.
Regards,
BGW

[BGW]

Gettin' too old for this......
Spent all day using a magnifier and a needle-point soldering iron. I finally managed to reconnect the circuit trace that I had cut on top of the board.
Then I rewired the switch connecting the two wires from either side of the trace cut under the board with the 12v line.
Fired up jkeys, applied 12volts, erased/re-flashed both TSOPS, and the damn thing finally woke up!
When the family cools off (because of me missing Thanksgiving dinner) I'll work on re-marrying the hard drive.
I sure hope it won't be this difficult next time.....
(...when penga's great fix finally goes down).
Regards,
BGW