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- Topic title should contain: the device's manufacturer, full model and the brief description of problem.
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Re: Re: Lenovo ThinkPad E590 Płyta NM-B911 rev:1.0 - nie uruchamia się.
by Google Adsense [BOT] • 6 August 2024, 20:37
#24 Re: Lenovo ThinkPad E590 Płyta NM-B911 rev:1.0 - nie uruchamia się.
by matic • 28 August 2024, 10:05
Measure the resistances between listed pins of transistors PQ101, PQ102:
a) Between pin 1 and pin 4.
b) Between pin 1 and pin 9.
c) Between pin 4 and pin 9.
d) Between pin 5 and pin 8.
e) Between pin 5 and pin 9.
f) Between pin 8 and pin 9.
Measure the resistances between listed pins of transistor PQ103:
a) Between pin 1 and pin 4.
b) Between pin 1 and pin 5.
c) Between pin 4 and pin 5.
Transistor PQ101 pinout:
Transistor PQ102 pinout:
a) Between pin 1 and pin 4.
b) Between pin 1 and pin 9.
c) Between pin 4 and pin 9.
d) Between pin 5 and pin 8.
e) Between pin 5 and pin 9.
f) Between pin 8 and pin 9.
Measure the resistances between listed pins of transistor PQ103:
a) Between pin 1 and pin 4.
b) Between pin 1 and pin 5.
c) Between pin 4 and pin 5.
Transistor PQ101 pinout:
Transistor PQ102 pinout:
#25 Re: Lenovo ThinkPad E590 Płyta NM-B911 rev:1.0 - nie uruchamia się.
by HotIce • 28 August 2024, 15:41
Measure the resistances between listed pins of transistors
PQ101:
a) Between pin 1 and pin 4 - 320 Kohm
b) Between pin 1 and pin 9 - 1.25 Kohm
c) Between pin 4 and pin 9 - 300 Kohm
d) Between pin 5 and pin 8 - 108 Kohm
e) Between pin 5 and pin 9 - 330 Kohm
f) Between pin 8 and pin 9 - 220 Kohm
PQ102:
a) Between pin 1 and pin 4 - 1 Mohm
b) Between pin 1 and pin 9 - 1.4 Kohm
c) Between pin 4 and pin 9 - 9 Kohm
d) Between pin 5 and pin 8 - 1.3 Kohm
e) Between pin 5 and pin 9 - 600 ohm
f) Between pin 8 and pin 9 - 32 Kohm
PQ103:
a) Between pin 1 and pin 4 - 80 Kohm
b) Between pin 1 and pin 5 - 60 Kohm
c) Between pin 4 and pin 5 - 10 Mohm
PQ101:
a) Between pin 1 and pin 4 - 320 Kohm
b) Between pin 1 and pin 9 - 1.25 Kohm
c) Between pin 4 and pin 9 - 300 Kohm
d) Between pin 5 and pin 8 - 108 Kohm
e) Between pin 5 and pin 9 - 330 Kohm
f) Between pin 8 and pin 9 - 220 Kohm
PQ102:
a) Between pin 1 and pin 4 - 1 Mohm
b) Between pin 1 and pin 9 - 1.4 Kohm
c) Between pin 4 and pin 9 - 9 Kohm
d) Between pin 5 and pin 8 - 1.3 Kohm
e) Between pin 5 and pin 9 - 600 ohm
f) Between pin 8 and pin 9 - 32 Kohm
PQ103:
a) Between pin 1 and pin 4 - 80 Kohm
b) Between pin 1 and pin 5 - 60 Kohm
c) Between pin 4 and pin 5 - 10 Mohm
#29 Re: Lenovo ThinkPad E590 Płyta NM-B911 rev:1.0 - nie uruchamia się.
by HotIce • 6 September 2024, 18:06
Po wymianie PQ102 na nowy nic się nie zmieniło, dalej brak napięcia na wszystkich cewkach. Zastanawiam się czy ten tranzystor jest rzeczywiście wadliwy, ma tą oporność 600 Ohm ale po odwróceniu sond multimetru jest już 1 Mohm a na nowym tranzystorze AON6998 jest podobnie, na pinach 5-9 jest 400 Ohm a po odwróceniu sond jest 220 Kohm. Pomiary na wylutowanych tranzystorach.
Re: Lenovo ThinkPad E590 Płyta NM-B911 rev:1.0 - nie uruchamia się.
by Google Adsense [BOT] • 6 September 2024, 18:06
This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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