Post by: dave11674 on December 30, 2010, 01:21:00 PM
i have a 74850c drive here
it has ix LT 1.1 on it
doing the drive half open trick would not do squat for this drive to get dummy from ix.
so i believe i have to do the MRA hack as this is what i had to do with a previous drive same model.
ok that other one went just fine.
this one is givign me all 777777777777777777 as the dvd key.
no way am i writing the data back like that heheh
ok so upon removing my 1.5 switch i clean solder points up and am noticing im getting a short across a couple of points, on a fresh board from the same drive this short is not presant.
can any1 help me here as the drive clearly aint dumping the key right so i cant proceed further.
the 2 arrows in the pic are the points that are shorting.
and as you can see there is clearly no solder bridging across the 2 tracks
(IMG:http://i27.photobucket.com/albums/c188/dave11674/IMG_0714-Copy.jpg)
thanks for any help and pointers here guys
Post by: Takashi on December 30, 2010, 01:50:00 PM
Use the Boxxdr method.
Post by: dave11674 on December 30, 2010, 01:57:00 PM
same results
edit
same reults with the resistor Boxxdr method
still dont explain why teh 2 points are shorted out tho
when a fresh new drive they are not
dave
Post by: iateshaggy on December 30, 2010, 04:45:00 PM
Post by: dave11674 on December 30, 2010, 04:58:00 PM
QUOTE(iateshaggy @ Dec 30 2010, 11:45 PM) 
take a picture of your drive. obviously there is a short and all you have to do is look at it to tell it is there, then remove that solder. if you have removed any obvious shorts and still have one, then you can toss the whole thing in the trash.
erm do u not see the pic above !?!?!?
why throw it in the bin ?!?!?
its somethign simple i know this.
anyone else with something better to contribute ?
dave
Post by: Takashi on December 30, 2010, 06:22:00 PM
just learn better electronics skills for future mods.
One of the few ppl on this forum that even has a chance of helping you is syntaxerror329
This post has been edited by Takashi: Dec 31 2010, 02:22 AM
Post by: dave11674 on December 30, 2010, 07:16:00 PM
QUOTE(Takashi @ Dec 31 2010, 01:22 AM)
nothing you can do except
just learn better electronics skills for future mods.
hheheheh
ive been doing electronics engineering for the past 20 years mate
my soldering skills and electronic skills are 100 to 1 at teh best of times (IMG:style_emoticons/default/smile.gif)
dave
Post by: Takashi on December 30, 2010, 07:29:00 PM
Post by: totoz on December 31, 2010, 03:16:00 AM
With traces cut and power from ck3 (or 360) voltage at pin101 is 2,15v
and if u look the second (vertical) cut it's 2,15v on the left and 1,30v on the right
check these values
when u repair traces everything 3,3v
Clean the pcb with braid and use good flux, it helps a lot.
This post has been edited by totoz: Dec 31 2010, 11:17 AM
Post by: dave11674 on December 31, 2010, 06:53:00 AM
there is no shorts across my solder points on this board.
takashi
lets see some of your pics then big shot
Post by: Takashi on February 02, 2020, 05:43:00 PM
QUOTE(dave11674 @ Dec 31 2010, 08:53 AM)
takashi
lets see some of your pics then big shot
(IMG:style_emoticons/default/smile.gif) probably my messiest work
74850C pic
Post by: dave11674 on February 03, 2020, 09:58:00 AM
QUOTE(Takashi @ Jan 1 2011, 12:43 AM)
hahah u trying to say your work is better than mine and poist your messiest pic
lol
anyways back to topic.
totoz
the 2 vertical lines i do just to make it easier that trying to cut out the actual 101 point
i put a jump wire across the left and right contacts then so all is good.
dave
also looking at the dump there is lots of data in ther elike its fully dumping it.
dave
Post by: iateshaggy on February 03, 2020, 12:40:00 PM
Post by: Takashi on February 03, 2020, 01:04:00 PM
Post by: Tron[ADS] on February 03, 2020, 03:41:00 PM
QUOTE(dave11674 @ Dec 30 2010, 10:21 PM)
i have a 74850c drive here
it has ix LT 1.1 on it
doing the drive half open trick would not do squat for this drive to get dummy from ix.
I'm a bit puzzled as to why you are wanting to do anything with this drive if it already has LT 1.1 on it.
Post by: Takashi on February 03, 2020, 03:48:00 PM