Red Flashing Light?

R

roden

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Dec 14, 2010
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Hey sorry to open this thread again guys, but i just took one of my boxes out to update, and its giving me a RED LOWER RIGHT FLASHING LIGHT on Boot, no error messages on screen.

Same as above,

FALCON, 12625 Dash, using NAND X with Alt SMC Points as were shown.

Now for some reson the console will not boot but for this red light, is was working fine last time i used it, i have checked all wiring and it looks sound, only thing if i flash back to the old original NAND the machine boots, ive tried making new nands and using the backed up 12625 that was working before but same thing, cant boot into xell either, so i can only asume its a jtag issue.

What the hell?? confused.
 
Martin C

Martin C

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I've moved your post to a new thread. It's a totally different issue.

Can you show a pic of your soldering? I know it's been a while, but you may have developed a dry joint somewhere.
 
R

roden

Full Member
Dec 14, 2010
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I resoldered all the joints, still the same, odd, ill post some pictures later when i get home from work.

Just odd how it was working and now its not.
 
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Martin C

Martin C

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Can you unplug the cable going to J2D2's QSB and get a resistance reading on J2D2.1 and J2D2.2? Just put the black probe on a ground point. You don't need the console plugged in.
 
R

roden

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Dec 14, 2010
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Ok boss, im on it, will probally be tomorrow now as the meter is in the van, thanking you for all your help, id be lost without you, will post back tomorrow my friend....
 
R

roden

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Dec 14, 2010
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Ok i put the meter on the 2K setting, checking the resistors i get the correct value from both.

Across ground and these pins both read 1.560 ???
 
R

roden

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Dec 14, 2010
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No I didn't but the box was already running 12625 fine, but it had not been used in a while, just red light next time I turned it on, it's not been played or nothings been loaded. It's actually my 3rd jtag box, I have a cygnos for main and 2 NAND x backups.
 
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R

roden

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Dec 14, 2010
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Let me know how to check them and I'll let you know, I'm 100% it's not efuses, just can't see how it can be if it has not been used, I was thinking maybe a diode is shot or the qsb board was faulty. Don't currently have spare diodes but if these turn out to be faulty then I'll sure order some.
 
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R

roden

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Dec 14, 2010
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Ok no worries this is taking way to long, gonna flash to stock, just cant be arsed with it.
 
Martin C

Martin C

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It could still be the GPU, even with good TDI and TMS readings.

You sure you want to update it? Plenty of us here who could take a look for you....
 
R

roden

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Dec 14, 2010
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Why wud it be the GPU, even though when i flash to the old NAND it boots first time every time?.
 
Martin C

Martin C

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roden said:
Why wud it be the GPU, even though when i flash to the old NAND it boots first time every time?.
Click to expand...
Because the GPU under normal operation isn't listening to the TDI and TMS lines.

Trust me - you can have a perfectly working console with a faulty GPU.
 
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