Search found 23 matches
- Thu Nov 10, 2016 7:53 pm
- Forum: HP-Compaq
- Topic: HP Stream 13-DA0Y0BMB6C0
- Replies: 3
- Views: 2648
HP Stream 13-DA0Y0BMB6C0
HP Stream 13-DA0Y0BMB6C0
- Wed Nov 09, 2016 8:57 pm
- Forum: Laptop Case Studies
- Topic: DELL 3542-NO POWERING ON
- Replies: 7
- Views: 4921
DELL 3542-NO POWERING ON
DELL 3542-NO POWERING ON
THE UNIT WAS DEAD. TRACED 5V_S5 WAS FOUND SHORTED. STARTED FINDING SHORTED COMPONENTS.
SHORTED COMPONENTS WERE RAM IC, S5-SO CONVERTIBLE IC & THREE 5 LEG COMPONENTS IN USB SECTION. NOW THE UNIT WAS ON BUT NO DISPLAY. FINALLY REFLASHED THE PCH BIOS AND GOT DISPLAY
THE UNIT WAS DEAD. TRACED 5V_S5 WAS FOUND SHORTED. STARTED FINDING SHORTED COMPONENTS.
SHORTED COMPONENTS WERE RAM IC, S5-SO CONVERTIBLE IC & THREE 5 LEG COMPONENTS IN USB SECTION. NOW THE UNIT WAS ON BUT NO DISPLAY. FINALLY REFLASHED THE PCH BIOS AND GOT DISPLAY
- Wed Nov 09, 2016 8:50 pm
- Forum: Laptop Case Studies
- Topic: LENOVO G585-DEAD-AWESOME CASE STUDY
- Replies: 1
- Views: 1664
LENOVO G585-DEAD-AWESOME CASE STUDY
GOT THE UNIT AS DEAD. [hidden]CHECKED 19V, 3V 5V ALW WERE OK. RTC SECTION WAS ALSO OK. NBSWON# SIGNAL, DNBSWON# SIGNAL WERE ALSO OK. PWRBTNOUT WAS ALSO OK. SLP_S4 & SLP_S3 SIGNALS WERE ALSO OK. BUT IT WAS THE POINT TO NOTICEABLE THAT THERE WAS NO SUSP. CHECKED THE SUSP BY JUMPERING FROM 3.3V ALW...
- Wed Nov 09, 2016 8:33 pm
- Forum: Laptop Case Studies
- Topic: SAMSUNG NP300E-DEAD
- Replies: 6
- Views: 4509
SAMSUNG NP300E-DEAD
SAMSUNG NP300E-DEAD THE UNIT WAS DEAD. CHECKED THE VOLTIN SECTION OUTPUT IS OK..BUT NO 3V5V ALW WERE NOT PRESENT. FIRST CHECKED THE VCC LINE OF THE STEPDOWN IC "TPS51125". FOUND THE IMPEDANCXE OF VCC LINE OF TPS51125 WAS VERY LOW. THE LIEN WAS CONNECTED BY ONE RESISTER AND CAPACITOR. THE I...
- Wed Nov 09, 2016 8:33 pm
- Forum: Laptop Case Studies
- Topic: COMPAQ C700-NOT POWERING ON
- Replies: 2
- Views: 2034
COMPAQ C700-NOT POWERING ON
COMPAQ C700
Fault:
MB WAS NOT POWERING ON.
DIAGNOSIS:
AFTER PRESSING POWER BUTTON, DC JACK LED GOES OFF.
FOUND 5VS LINE OUTPUT SHORTED.
CHECKED AND FOUND CAPS PRESENT ON INPUT OF ODD SECTION SHORTED. REMOVED THAT CAPS. +5VS LINE GOT CLEARED. NOW MB TUNRED ON.
Fault:
MB WAS NOT POWERING ON.
DIAGNOSIS:
AFTER PRESSING POWER BUTTON, DC JACK LED GOES OFF.
FOUND 5VS LINE OUTPUT SHORTED.
CHECKED AND FOUND CAPS PRESENT ON INPUT OF ODD SECTION SHORTED. REMOVED THAT CAPS. +5VS LINE GOT CLEARED. NOW MB TUNRED ON.
- Wed Nov 09, 2016 8:32 pm
- Forum: Laptop Case Studies
- Topic: DELL 5010 GFX MODEL-DEAD
- Replies: 0
- Views: 1114
DELL 5010 GFX MODEL-DEAD
DELL 5010 GFX MODEL-DEAD CHECKED 3V 5V ALW WAS OK. RSMRST# WAS OK. NBSWON# & DNBSWON# WERE ALSO OK. BUT NO SLP_S4 AND SLP_S3 SIGNALS WERE COMING. FINALLY REBALLED THE PCH. NOW MB GOT POWER ON AND OFF WITHIN FEW SECONDS. TRACED THE ATI CHIP WAS FOUND SHORTED. DISCONNECTED THE GPU SUPPLY COIL. NOW...
- Wed Nov 09, 2016 8:31 pm
- Forum: Laptop Case Studies
- Topic: TOSHIBA C55-BIOS PASSWORD RESET
- Replies: 4
- Views: 3415
TOSHIBA C55-BIOS PASSWORD RESET
TOSHIBA C55-BIOS PASSWORD RESET
THE UNIT WAS CAME FOR RESETTING THE BIOS PASSWORD. GOT THE TESTED BIOS FROM VINAFIX.VN (BY HELP OF ARUN SIR) AND WRITTEN TO THE BIOS CHIP. AND THE SYSTEM WAS POWER ON WITHOUT BIOS PASSWORD. HAPPY
THE UNIT WAS CAME FOR RESETTING THE BIOS PASSWORD. GOT THE TESTED BIOS FROM VINAFIX.VN (BY HELP OF ARUN SIR) AND WRITTEN TO THE BIOS CHIP. AND THE SYSTEM WAS POWER ON WITHOUT BIOS PASSWORD. HAPPY
- Wed Nov 09, 2016 8:30 pm
- Forum: Laptop Case Studies
- Topic: DELL 630-DIM DISPLAY
- Replies: 0
- Views: 1185
DELL 630-DIM DISPLAY
DELL 630-DIM DISPLAY THE UNIT WAS CAME FOR REPAIRING DIM DISPLAY PROBLEM. I CHECKED AND FOUND THE INVERTER WAS OK BUT THE ENABLE SIGNAL 3.3V WAS MISSING. I REPLACED THE ORIGINAL INVERTER BY ONE GOOD UNIVERSAL INVERTER. PUT JUMPER FROM 3.3VS AS ENABLE SIGNAL FOR THE INVERTER. NOW THE DIM DISPLAY CASE...
- Wed Nov 09, 2016 8:29 pm
- Forum: Laptop Case Studies
- Topic: LA-7912P-DEAD
- Replies: 7
- Views: 4780
LA-7912P-DEAD
LA-7912P-DEAD
THE UNIT WAS DEAD. FOUND VOLT IN SECTION FINAL OUTPUT VOLTAGE WAS 3V. AND THE CHARGER IC "BQ25A" WAS HEATING. REPLACED THE CHARGER IC WITH NEW. NOW THE UNIT WAS TURNED ON WITH PROPER DISPLAY. HAPPY
THE UNIT WAS DEAD. FOUND VOLT IN SECTION FINAL OUTPUT VOLTAGE WAS 3V. AND THE CHARGER IC "BQ25A" WAS HEATING. REPLACED THE CHARGER IC WITH NEW. NOW THE UNIT WAS TURNED ON WITH PROPER DISPLAY. HAPPY
- Mon Nov 07, 2016 5:11 pm
- Forum: Others
- Topic: WIPRO NOTEBOOK 7710P
- Replies: 1
- Views: 1698
WIPRO NOTEBOOK 7710P
WIPRO NOTEBOOK 7710P