STRANGE PS2 PROBLEM help
Ps2 v7 pal 39004
Chipped with messiah 2 .
Load original OK
Load movies OK.
Load ps2 cdr backup OK.
Load psx original & backup OK.
In ps2 DVD-r backup go to the bronser stay for 2 mnutes and load OK.
I change the laser unit NOTHING.
I change the mod ( Messiah2 1.21 , 1.07 , 1,30 ,, Mars 2 ,, DMS3) NOTHING .
Desold and resold many times with change of wires too .
Any idea for this very strange problem ?????
I would suspect the DVD-R backup media or burn quality.
I have try many media (ritek g03-g04 ,samsung,traxdata red , etc.
The same media with this console ( with replacement mobo work very good) .
Is NO MEDIA PROB.
Is mobo prob
Maybe the laser gain calibration circuit (pair of big SMD transistors near BA5815) is not working properly ....
Or a broken SMD resistor ... Do a check on the area arround the connection to the laser unit (Nearby the Texas Instruments chip, including the laser gain calibration circuit)
I hope this helps you ... Usually this kind of weird trouble is caused by broken SMD components, mostly resistors ....
But if i have a broken smd why work original and cdr ?????
Anyway i dont see anything wronk in this area