How to repair lite-on pad 101

[iateshaggy]

if you are down w/ buying $#!t, get a multimeter, it will help you just as much as a good soldering iron.  not sure if a butane soldering iron will help you solder better, but i think u can use it for the epoxy if you are careful.  i use a rework station ($80) and it gets the epoxy to a perfect temp so it comes up and doesn't destroy anything.  it also has a great soldering iron w/ variable temps.

[Dream]

Status returned 0x7F Problem.

Measure r203 zero ohm resistor from 12V line that it is good.
Measure r204 zero ohm resistor from 5V line that it is good.
Measure voltage 12V and 5V from cap points.

If there is no voltage or the zero ohm resistors are blown you have to fix it.
It can be also bad capacitor but 99% is voltage problem @ broken trace.

[Skinleech]

Hi All,

Hope someone can help me with my issue - looks like it's pretty common place.  I'm trying to hack my Liteon 93450c, and as it's the first one I've done, decided to get an Xecuter switch/clip v2.  I followed the instructions, but I've obviously done something wrong as I can't see the drive in Jungleflasher, but more specifically the MT chip is getting hot to touch, so I assume I've shorted something somewhere, but I can't see any evidence of that.

Following Dream's advice in the thread, I've used my multimeter to check the trace cuts, which seem fine.  They also show up green on the Xecuter switch.  I've measured the resistance on the board as per the diagram on post #190, and it comes back ~65ohm which seems to be bad.  I've not measured the voltage as I don't really want to turn it on at the moment in case I damage it further.

I was also thinking I should cover off the exposed copper what is not supposed to be exposed, with electrical tape, or clear varnish.

Here are pics of my board, I've circled a couple areas on the first pic where I think I've done some damage.  Any ideas on what I can do to fix it?



Thanks.

[Dream]

Skinleech,

MT is hot... hmmm fix like this and measure resistance.
You don´t need to measure voltage, only resistance.

[Skinleech]

Thanks Dream.

It seems to be really low now, like 0.05 within a matter of seconds.  I've resoldered one of the trace cuts (the right) as I wasn't happy with it, but the result is the same, very low readings.

Anything else I can do here, or is it dead?  I didn't manage to get key key unfortunately.

Thanks.

EDIT: I seem to be gettiong nothing now in fact.  Dang.

[iateshaggy]

so you have any solder on the board?  if you are gtting 0, u either have a solder blob shorting out or your chip is fried.  you can fix a blob of solder.

[Skinleech]

so you have any solder on the board?  if you are gtting 0, u either have a solder blob shorting out or your chip is fried.  you can fix a blob of solder.

I don't see any, but it only happened once I redid the right-hand section of trace on the reverse of the board.  It's now messier than it was.



I guess the question is, if I do fix the issue and get a reading again, is there anything I can do with such a low response on the resistance?

[Dream]

so you have any solder on the board?  if you are gtting 0, u either have a solder blob shorting out or your chip is fried.  you can fix a blob of solder.

I don't see any, but it only happened once I redid the right-hand section of trace on the reverse of the board.  It's now messier than it was.



I guess the question is, if I do fix the issue and get a reading again, is there anything I can do with such a low response on the resistance?

Pictures don´t work... looks bad shorted clean it and re do all.

[imaleecher]

I successfully flashed my LiteOn 93450c  but upon re-soldering the cut joints, I damaged and lost pad 122  . I tried to boot the drive disregarding the issue but the XBOX360 just keeps blinking and I get no display. What are my options? Can I just bridge it to a trace on the back or do I have to run one to a resistor on the front of the board? If so, which one? Much thanks!

Is this all I have to do to fix it? Just the bottom image? Connect R207 to C03? http://dream.pic.fi/kuvat/Xbox%20360/Liteon%207%2C8%2C9%20Pad%20Repair/367%20and%201.8V%20Fix/367+and+1.8V+BoxxDr+Xecuter.JPG

[Skinleech]

Pictures don´t work... looks bad shorted clean it and re do all.

Not sure why the images aren't showing up, they were fine when I posted.  Oh well.

Will look at resoldering, but not sure if I'll get time over the next couple days - will post back once I've got it done.

Cheers.

[Dream]

I successfully flashed my LiteOn 93450c  but upon re-soldering the cut joints, I damaged and lost pad 122  . I tried to boot the drive disregarding the issue but the XBOX360 just keeps blinking and I get no display. What are my options? Can I just bridge it to a trace on the back or do I have to run one to a resistor on the front of the board? If so, which one? Much thanks!

Is this all I have to do to fix it? Just the bottom image? Connect R207 to C03? http://dream.pic.fi/kuvat/Xbox%20360/Liteon%207%2C8%2C9%20Pad%20Repair/367%20and%201.8V%20Fix/367+and+1.8V+BoxxDr+Xecuter.JPG

Bridge the 101 cut and connect r207 to c03 and the drive is fixed.

[imaleecher]

I successfully flashed my LiteOn 93450c  but upon re-soldering the cut joints, I damaged and lost pad 122  . I tried to boot the drive disregarding the issue but the XBOX360 just keeps blinking and I get no display. What are my options? Can I just bridge it to a trace on the back or do I have to run one to a resistor on the front of the board? If so, which one? Much thanks!

Is this all I have to do to fix it? Just the bottom image? Connect R207 to C03? http://dream.pic.fi/kuvat/Xbox%20360/Liteon%207%2C8%2C9%20Pad%20Repair/367%20and%201.8V%20Fix/367+and+1.8V+BoxxDr+Xecuter.JPG

Bridge the 101 cut and connect r207 to c03 and the drive is fixed.

Thank you Dream

[iateshaggy]

so you have any solder on the board?  if you are gtting 0, u either have a solder blob shorting out or your chip is fried.  you can fix a blob of solder.

I don't see any, but it only happened once I redid the right-hand section of trace on the reverse of the board.  It's now messier than it was.



I guess the question is, if I do fix the issue and get a reading again, is there anything I can do with such a low response on the resistance?

pictures work for me.  you only need the smallest bit of exposed wire and you need to keep it tight and clean.  looks like one of your ribbon cable brackets caught on fire, gonna guess u need a new pcb.  if you have a friend that can solder, let them do this for you.

[Dream]

iateshaggy, I can see it now it is bad...

Skinleech, let iateshaggy to fix it for you.
5V line is burned i hope it is only the 5V line...

[imaleecher]

I successfully flashed my LiteOn 93450c  but upon re-soldering the cut joints, I damaged and lost pad 122  . I tried to boot the drive disregarding the issue but the XBOX360 just keeps blinking and I get no display. What are my options? Can I just bridge it to a trace on the back or do I have to run one to a resistor on the front of the board? If so, which one? Much thanks!

Is this all I have to do to fix it? Just the bottom image? Connect R207 to C03? http://dream.pic.fi/kuvat/Xbox%20360/Liteon%207%2C8%2C9%20Pad%20Repair/367%20and%201.8V%20Fix/367+and+1.8V+BoxxDr+Xecuter.JPG

Bridge the 101 cut and connect r207 to c03 and the drive is fixed.

Thank you Dream

Woot, it booted perfectly. Thank you again Dream! 

[relltherell]

Here you go. ALT Pin 101 FIX

[img]

hey on the front of the pcb if I unmounted the 2 connecting points in the first pic is there any alternate points I can solder to get power on pad 122

[iateshaggy]

the trace above via 101.  solder that to the via 122 trace and you are back in business.

[relltherell]

the trace above via 101.  solder that to the via 122 trace and you are back in business.

Thanks ill try

[Skinleech]

pictures work for me.  you only need the smallest bit of exposed wire and you need to keep it tight and clean.  looks like one of your ribbon cable brackets caught on fire, gonna guess u need a new pcb.  if you have a friend that can solder, let them do this for you.

Thanks guys, I tried to keep the wire & solder as small as possible, I can solder, but I don't usually solder at this small size.

The bracket didn't catch on fire, I caught it with the shaft of my soldering iron (stupid mistake I know), the actual connections are ok as far as I can see.

I honestly don't care if the drive works or not, as long as I can get the keys, as I have spare drives at home anyway, so if you are willing to fix it (assuming it's fixable) iateshaggy, I am more than happy to send it your way.

Not sure if you can reallt tell, but ignoring the burned connection, I'd be interested if you can tell me what I did wrong if you take a look at the PCB, as I followed the instructions to the letter.

Thanks again iateshaggy & Dream.

[Dream]

Skinleech,

You can bridge the 5V line zero ohm resistor. Put small wire top off it and solder it.
Fix your repair work don’t power the drive if your resistance is out of range 3,3V to GND 95k-110k ohms.
Use awg30 wire.

I think you have blugged power cable wrong way.

Look at my work and see how the wires are soldered, they dont touch the other lines...