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SS7 motherboard not working

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Reply 20 of 23, by rasz_pl

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again
>the only thing you should measure is drain-source junction
while in circuit, powered down, in diode multimeter mode, both directions

low resistance gate-source can mean blown LX1682, would result in same symptoms, testing will require desoldering to check

Reply 21 of 23, by PcBytes

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rasz_pl wrote:
again >the only thing you should measure is drain-source junction while in circuit, powered down, in diode multimeter mode, bot […]
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again
>the only thing you should measure is drain-source junction
while in circuit, powered down, in diode multimeter mode, both directions

low resistance gate-source can mean blown LX1682, would result in same symptoms, testing will require desoldering to check

Here's a photo of what I mean. Explanation on the bottom of the picture.

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Main PC: i5 3470, GB B75M-D3H, 16GB RAM, 2x1TB
98SE : P3 650, Soyo SY-6BA+IV, 384MB RAM, 80GB
Milennium : P2 266, Zida LX-98AT, 256MB RAM, 10GB+20GB
2k: Duron 750, Totem TM-S730LMR, 256MB RAM, 40GB

Reply 22 of 23, by rasz_pl

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your pinout is wrong, your conclusions are wrong, pin 1 is gate

again
>again
>>the only thing you should measure is drain-source junction
>while in circuit, powered down, in diode multimeter mode, both directions

>low resistance gate-source can mean blown LX1682, would result in same symptoms, testing will require desoldering to check

Reply 23 of 23, by PcBytes

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rasz_pl wrote:

the only thing you should measure is drain-source junction
while in circuit, powered down, in diode multimeter mode, both directions

I get infinite resistance on all FETs when I do that.

Main PC: i5 3470, GB B75M-D3H, 16GB RAM, 2x1TB
98SE : P3 650, Soyo SY-6BA+IV, 384MB RAM, 80GB
Milennium : P2 266, Zida LX-98AT, 256MB RAM, 10GB+20GB
2k: Duron 750, Totem TM-S730LMR, 256MB RAM, 40GB