J taging 3100

[bluefins]

3100 tryed 6 different j tags of all kinds.
tryed 4 computers.
just receved buff solder in jtag friday.
I did 3 other 3100's yesterday no problem.
I have bin playing with this one on and off for months till
i get frustrated with it and put it away again for a few weeks.
it will take update when i have junkyard fix it.it shows good info
in info screen right softwear R00 #.
I just cant read it with jtag
i would smash it and enjoy doing it but i just cant bring myself to give up
when i get it fixed then i will drive over it with my truck lol
thanks
bluefin

[Birdmanink]

don`t give up on it yet. there must be a way to fix it.

you could remove the board from the case and clean where the jtag contacts with an white eraser or with a lil alchol and a q-tip

maybe look around for a loose conection/contact on the board.

another thing to try, if u are using a jtag on the bottom of the board, you can solder on a top side jtag and try that method.

i`ve got "rid" :) of a few receivers i wish i would have kept, cooler heads will prevail

[Sandman]

I agree with Birdmanink on the topside JTAG points for your 3100 (301.010).

Solder in a Simple JTAG (you can build one for the cost of 5 - 100 Ohm resistors, a DB25M plug and some wire).
If you are using a Pogo pin type JTAG, I'd advise against it.
I used one long ago and my wrist would cramp up because of the two TSOP bins taking over 3 minutes each for a 3100 (301.010) and the result was bad reads because of subtle shifting of the pogo pins from arm fatigue.

Do a soldered in "Hands Free" Simple JTAG.
We have a file named "Simple JTAG for Dummies" in our Common Receivers->JTAG Files Area that shows how to make one.

:)

[Mikman001]

Another thing you may try as in my system , my bios lpt port was set to spp which DID NOT WORK so I set it to ecp and had no probs. here is how :

Issue:
How to change the LPT port within CMOS.

Solution:
This is dependent on the type of BIOS installed in the computer. However, generally in CMOS you will need to locate the LPT port, generally under advanced or peripheral configuration. Once selected, you should have the capability of changing the printer port mode to ECP / BI-Directional / EPP / Output only. :aaaaargh:
Try that hopfully that works for ya , good luck!

[bluefins]

i have used a soldered buffed j tag i have tryed soldering it on the top side and on the bottom side i did 3 other 3100 with the same j tag
over the weekend with no problens this recever i swapt for a 2700
ithought i was getting the best of the deal now it is a challang to see if i can get it working I have done allot of recevers over the years and never seen one act like this i dont think it ever had a lock on it can someone tell me where you have to cut trace when installing a lock
so i can look at this one
thanks
bluefin

[Sandman]

i have used a soldered buffed j tag i have tryed soldering it on the top side and on the bottom side i did 3 other 3100 with the same j tag
over the weekend with no problens this recever i swapt for a 2700
ithought i was getting the best of the deal now it is a challang to see if i can get it working I have done allot of recevers over the years and never seen one act like this i dont think it ever had a lock on it can someone tell me where you have to cut trace when installing a lock
so i can look at this one
thanks
bluefin

No trace cut on a 2700. You remove the R259 resistor instead.
Attached is a pic of where it is:

[bluefins]

what mods have to be made to 3100 ird to install tsop lock?

[Sandman]

what mods have to be made to 3100 ird to install tsop lock?

That model needs a trace cut, along with other wires connected to the mainboard. It depends on which lock you want to use. For instance, the AR105-B lock also connects to the lifted pin#7 of the EEProm chip.

See the attached pic for the 3100 (same as 301.010) points (without EEProm hookup)

[bluefins]

+this recever i am having trouble with seems to not have been moded but i still cant get a read from with jtag.I updated softwear by using junkyard fix as a last resorce hoping it would jtag after update but no go. aney other ideas i can try.
thank you
bluefin

[bluefins]

softwear updated
light is on
system info looks good
i have tryed pogopin jtag and solder in i have had no problem with

other 3100s&2700 with same gear latley

[Sandman]

softwear updated
light is on
system info looks good
i have tryed pogopin jtag and solder in i have had no problem with

other 3100s&2700 with same gear latley

That is a weird one bluefins.
I do not know what to suggest at this point.

When you try to JTAG that 3100, do you see the Box Keys etc?...or are you getting a Device not recognized FFFF/FFFF or something like that?

What does happen when you try to JTAG it?

[bluefins]

Device not recognized

[cuat420]

I usually fix that by editting the jkey.def file (make a copy first) and then changing the correct flash chip form 0xff45 to 0xffff. 0xff45 is an example and it might be tough to find but if you keep trying you might be able to edit the correct chip and get it to read/write to the flash.

Flash, 3, "29DL323T", 0x2250, 0x400000, 1, 1, 0, 1, 71, 1
Sector, 3, 63,0 ,0x10000
Sector, 3, 8, 0x3f0000,0x2000

It'll look like that in the jkeys.def file. You might need to jtag a good receiver and see what the chip is ex: "29DL323T" and then edit the number in red to read 0xffff or what ever device id is reported.

It is not the easiest to do but I've had to for few PVR 5xx to get them to respond after a bad write or erase.

Just remember the numbers I used are examples and may not be the same ones you need to change.