LA Chip DEAD OR ALIVE?

[dreamzboy]

All 3 of my ps2 v9 could not read any games. From what I've read, my LA chip could possibly be dead. I measured the the resistance from pin 18 & 19 and 20 & 21, they all have a resitance of 20 - 40 OHMs (don't quote me , all I see is my meter jump and that should be good?) Is that how you measure to see if your LA chip is still alive?

[dreamzboy]

man...I got no love at all.

Anyway, after countless hours of reading and searching. I came to find out that it is pretty hard to know if the LA chip is fried or not. Base on my $20 analog multimeter, I cannot trust the resistance readings on it.

All I want to know if I were to replace the LA chip from divineo, does it come with just the chip or a chip on a pcb? Secondly, are there any instructions on how to remove the LA chip on my ps2? Can I just cut out all the pins?

Help...

[relaxxx]

I posted about this a long time ago. Forget about testing the LA chip itself. You need to test the laser coils to see if the LA chip needs to be replaced. If the lens coils, even just one of them is below 4 ohms, you need either a complete LA replacement or a red PCB repair MOD.

Always the best way to go is a complete LA replacement and if both coils are shorted (usually around 2 ohms) you have no other choice. If just one coil is partly shorted you can probably get away with installing a red PCB fix, the kind that leaves the old LA chip in it?s place because it is still partly functional. I think there?s 4 pins on the LA that need to be cut and 10 or so connections to solder. Do not bother with the ribbon PCB 3rd party boards that require LA removal, if you need to remove the LA chip, replace it with an authentic LA replacement, they are probably the same price. And when you install the new LA, do the Romeo mod on it!!

Of course you also need to replace or repair your lasers with shorted coils or they will just damage a good LA chip.

[dreamzboy]

Once again...just to confirm. If I'm doing the full LA chip replacement that means I'm gonna pull out the chip, solder the new chip in except pin #17 for the romeo mod and replace the laser the if needed right?

[kl1k]

I agree with relaxxx - if one of the coils is shorted and you replace the laser without the LA, it blow the laser again. The best bet is to replace the LA and the laser. Its fairly easy to replace the LA if you have any skill in soldering.

I also wouldnt waste my time with the pcb version - use the original.


Yip - that the correct step. Replace LA - be sure to check that all pins are soldered. You can use your meter to check for continuity. Also check that there are no shorts. Double and tripple check this. Its easy to stuff up when resoldering a smd. Do the romeo and replace the laser.

[TRABEL]

well i agree with both
if coils are bad need to replace both LA and lens...
thought not always LA is bad ....

[relaxxx]

well i agree with both
if coils are bad need to replace both LA and lens...
thought not always LA is bad ....

400C's go for around $60-80. LA's are around $10-20. Do you want to risk a $60 part with a $10 chip that's already damaged one laser and countless people with experience will tell you that it will cause more damage??

Again, if one coil is even partly shorted, replace the LA!!!!!

[dreamzboy]

Thank you so much for the help. I really appreciate it. I knew what I was doing, but I needed a more solid answer and u guys cleared it up. Thanks again.

oh by the way, the refurbish laser only cost $41 plus shipping at Longleystudios.com incase someone might be interested. Unless there's a cheaper site that I don't know about.