2 Dp 301-13 dead attempting video mod

[qwerty5]

I tried to video mod a 301-13 2 chip model cut the trace and fed power and i cant jtag it any more cpu reported as 0x000000 in jkeys and it doesnt power up any more and no video, the second receiver is a single chip in error i pluged it before cutting trace while voltage applied to sb35 and same thing happened to it, I had good luck doing many things with dish receivers before but my first videomod experience went bad, I didnt have the chance to jtag these receivers after this happened by just applying the voltage to sb35, I used to jtag them before and they used to power up and I have few jtags lying around, if anyone had the experience of loosing the receiver to a bad videomod and the experience of repairing pls advice as I didnt see posts addressing bad video mode incidents and I thought of it as a safe procedure

[ellsmako]

OK, so how did you apply power ?
( how much voltage )
with a voltage regulator or the diode resistor method or something else.
If you disconnect your " power applied to sb35. and reconnect the trace. ( by the way did you verify that the race was really cut clean . )
the unit should power back up.
what jkeys ?
what kind of Jtag ?
did you verify that a vid mod was needed ?
look up gunthers guide or other vid instructions.
did you check that you jtag is working properly ( check those connections and paths)

[werks]

Did you get correct jtag loc's? A 3100 & 301 are NOT the same mobo! I fucked one of those by not clean cutting the trace & when i did cut clean...she was TOAST!

[vmod32]

Just to clarify you were able to jtag the receiver before you did the vidmod? If so, I would try and undo everything you did, and if you can read it again with jkeys great. Don't give up yet unless alot of smoke came out of the receiver it may still be fixable.

Double check all of you solder points, I'd download gunters guide and check that over. Thats the one i used and it worked great.

[qwerty5]

yes I was always able to jtag the units and i have few homemade jtags, that iI nicely made and they work just fine, these receivers had the 209 firmware and used to power up fine just before the mod, I didnt have a chance to make any changes to the firmware, so I suppose they should boot if I just connected sb35 to the spot, one of the receivers I had the sb35 connected to the 13v mid pin of a nearby large transistor with a heatsink and the trace was not cut yet, i needed to hook a receiver and forgot that I have voltage applied already and havent cut the trace yet was powered up for less than a minute with no green light, no smoke and that was it I removed the voltage feed and the receiver green light doesnt come on, I couldnt jtag it, I let it stream useless I feel the cpu and flash seem to overheat now on it, the second one i cut the trace and verified with an ohmmeter, I applied 6-7 v low voltage to sb35 same thing occured

[qwerty5]

I have a simple question for the experienced in doing videomods, if a voltage is applied to sb35 either 7-9 or 13 v and the trace is not properly cut does it always mean burning your cpu?, is it possible my cpus got fried, I had no smoke at all

[ellsmako]

Ok you really should look up gunthers guide or a 301 guide, or vidmod guide. pulling unregulated power from the board is not good. You are suppose to get 12v Approx . pay attention to the grounding please. How did you repair the trace cut. Did you just bridge the gap ? You may have fried things but who knows. Surprised the fuse or something did not pop. I would start with the good trace cut one, verify the trace is cut and you have cut the correct trace.

[BudMaNNy55]

yes I was always able to jtag the units and i have few homemade jtags, that iI nicely made and they work just fine, these receivers had the 209 firmware and used to power up fine just before the mod, I didnt have a chance to make any changes to the firmware, so I suppose they should boot if I just connected sb35 to the spot, one of the receivers I had the sb35 connected to the 13v mid pin of a nearby large transistor with a heatsink and the trace was not cut yet, i needed to hook a receiver and forgot that I have voltage applied already and havent cut the trace yet was powered up for less than a minute with no green light, no smoke and that was it I removed the voltage feed and the receiver green light doesnt come on, I couldnt jtag it, I let it stream useless I feel the cpu and flash seem to overheat now on it, the second one i cut the trace and verified with an ohmmeter, I applied 6-7 v low voltage to sb35 same thing occured

Did you reconnect the trace? To read and or write the trace needs to be closed or 12volts needs to be applied. 6 or 7 volts to do a full erase or write to the locked sectors will not work. After modding remove what sounds like a 12 volt regulator and place a jumper back in between the small solder point and DSB35. If you did not get a clean write don't expect it to power up and have video. It may power on, if it does stream it and let it download again.

[Caddylover]

Dude, I did the same stupid thing. I had done several vidmods before and then lo and behold, I had a stupid moment and had 12 volts going as I plugged it in and forgot to cut the trace. 5 seconds of a nice humming noise and she gave up the ghost.

I haven't tried reversing it and tagging it again, but maybe I will when I have some time. Funny thing though, is that I could still get a small reading off of it after I screwed up. Now I get nothing jtaggin it top or bottom.

Caddy

[bugger]

the 9 volt vid mod works great. east to do, a lot less hassle then the other method. i think using 12 volts is whats killing your recivers.........

[qwerty5]

sure I repaired the trace by adding a wire between the spot and sb35 and removed the voltage, applying 12v from the transistor mid pin is described as an easy videomod method in some documents I downloaded, I havent attempted repair yet but i seeked ideas, I expected many to have a ready answer if easily I would fry the cpu or not

[werks]

sure I repaired the trace by adding a wire between the spot and sb35 and removed the voltage, applying 12v from the transistor mid pin is described as an easy videomod method in some documents I downloaded, I havent attempted repair yet but i seeked ideas, I expected many to have a ready answer if easily I would fry the cpu or not
I fried one! I didn't cut the trace completely...dope...I could read and write the tsop just fine...but could not get anything but green and black screens... so i turned on the vidmod...hooked it up...and it seemed like it would update(blinking light) then up came the video! When i realized that i had fucked up...I tried going back...cut the trace!Smoke...no power light...fried indeed! ( was not my unit...so I gave him mine)