I there guys , i hope all is good with all of you ,
Well today i received a toshiba l735 with 19 volts rail in short , First power diode was in short , changed it and no more short on the dc supply , but the main step controller was also getting very hot , In this case it was a uP6188A, since i didn't have any of does in stock , after a bit of search i've found that the ISL6237 could be used instead , changed the main step controller , now i've got 19 volts everywhere , but there was still no 3.3 and 5 volts , and also noticed that ISL95835(cpu core) is getting warm , found the problem on the 5 volts line , was both mosfet were dead , replaced them , voila , got 3.3 and 5 volts line good , pilot light turn on , and also machine turn on but turn off after a while , cpu don't get hot , always cold , assuming that the ISL95835 is getting a bit hot , guess is not ok , making the signal from KB controller that communicate with the cpu core to give a order to shutdown the machine since cpu core ic is not ok , also noticed that even with pilot led on , bios is with 0.25 volts , and its goes to normal value(3.33V)when i turn the machine on , im really almost sure that KB controller doesn't enable well the signal since cpu core ic is not ok .
My main question is , since i don't have in stock , ISL95835 , with which IC i can replace this one ? i know this ISL is Compliant with IMVP-7/VR12TM , i cheked a few and found some related items , does that i will write down .
ISL6353 Multiphase PWM Regulator for VR12 DDR Memory Systems
ISL6363 Multiphase PWM Regulator for VR12TM Desktop CPUs
ISL6364 Dual 4-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications
ISL6364C Dual 4-Phase + 1-Phase PWM Controller for VR12 Desktop Applications
ISL6366 Dual 6-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications
ISL95831 3+1 Voltage Regulator for IMVP-7/VR12 CPUs
ISL95837 3+1 and 1+1 Voltage Regulator for IMVP-7/VR12TM CPUs
Well would be nice finding a solution instead of waiting some weeks for a component to arrive .And since i've got around 400 stopped board for spares and none of them have this IC , need to find a good replacement .
wait for your expert taughts on this.
highly appreciated your comments and suggestions.
sincerely
jonathan
Well today i received a toshiba l735 with 19 volts rail in short , First power diode was in short , changed it and no more short on the dc supply , but the main step controller was also getting very hot , In this case it was a uP6188A, since i didn't have any of does in stock , after a bit of search i've found that the ISL6237 could be used instead , changed the main step controller , now i've got 19 volts everywhere , but there was still no 3.3 and 5 volts , and also noticed that ISL95835(cpu core) is getting warm , found the problem on the 5 volts line , was both mosfet were dead , replaced them , voila , got 3.3 and 5 volts line good , pilot light turn on , and also machine turn on but turn off after a while , cpu don't get hot , always cold , assuming that the ISL95835 is getting a bit hot , guess is not ok , making the signal from KB controller that communicate with the cpu core to give a order to shutdown the machine since cpu core ic is not ok , also noticed that even with pilot led on , bios is with 0.25 volts , and its goes to normal value(3.33V)when i turn the machine on , im really almost sure that KB controller doesn't enable well the signal since cpu core ic is not ok .
My main question is , since i don't have in stock , ISL95835 , with which IC i can replace this one ? i know this ISL is Compliant with IMVP-7/VR12TM , i cheked a few and found some related items , does that i will write down .
ISL6353 Multiphase PWM Regulator for VR12 DDR Memory Systems
ISL6363 Multiphase PWM Regulator for VR12TM Desktop CPUs
ISL6364 Dual 4-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications
ISL6364C Dual 4-Phase + 1-Phase PWM Controller for VR12 Desktop Applications
ISL6366 Dual 6-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications
ISL95831 3+1 Voltage Regulator for IMVP-7/VR12 CPUs
ISL95837 3+1 and 1+1 Voltage Regulator for IMVP-7/VR12TM CPUs
Well would be nice finding a solution instead of waiting some weeks for a component to arrive .And since i've got around 400 stopped board for spares and none of them have this IC , need to find a good replacement .
wait for your expert taughts on this.
highly appreciated your comments and suggestions.
sincerely
jonathan
the anyway for the suggestions .
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