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Senior Member
Join Date: Apr 2021
City & State: Parcela/Mazowieckie
My Country: Poland
I'm a: Hobbyist Tech
Posts: 159
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![]() Hi,
I have a very stubborn card from ASUS, I believe I made almost everything what can be done, no success: • Card has all voltages, resistances seem to be OK, but is not recognized in Bios, neither Mats, nor Windows (mesurements on attached picture) - has Micron memories. • Monitor not reacting, even no backlight going on • Mats test not possiblle, card not visible • PEX_RST* - The signal is OK, checked with an oscilloscope, it goes Low for a short period when I do board reset, then is High again • VRAM PGOOD? It is not "anded" with PEX_RST_BUF* (no logic gate, only R0 Ω) -> ASUS is going the simplest way on this card, several logics are simplified • Crystal 27MHz - works, has 0,9V twice • PCIe capacitors - all OK and not shorted, not missing • PCI data and address lanes diode mode check - all OK, not shorted, no missing, all same levels • Reading Bios - YES, it works, the BIOS is read shortly during boot, level changes are visible on pins 1,2,5,6, then silence forever • Uploaded another BIOS from TECHPOWERUP (86.04.50.00.AS3), then newest from ASUS site (86.04.50.00.AS12) - did not help • Some additional measurements: - LOWPWR_MODE_Q1 / GPIO6_NVVDD_PSI * -> High - GPIO1_GC6_FB_EN -> Low, active, but not connected anywhere, maybe it should go to GC6_FB_EN_CONN_A32 (have only a similar schematics here, so can't verify this), maybe a resistor is missing ? - GC6_FB_EN_Q * -> OK Low - 1V8_MAIN_PGOOD -> OK High - GPIO4_GC6_1V8_MAIN_EN (on D504) -> High - OK - NV3V3 -> 3.3V OK - GPIO2_GC6_GPU_WAKE * -> remains Low -> probably not used on this card ? - 3V3_Aux -> OK, present - 3V3_F -> OK, present - FBA_VREF_Q -> OK 1.08V on Q11 and Q8 - 1V8_GPC_SP_VID_PLL -> OK - PEX_SMCLK -> not connected anywhere (also on boardview) ? - PEX_SMDAT -> not connected anywhere (also on boardview) ? • GPU not becoming too hot, memories too This card is really a big questionmark for me, everything seems to be OK, but it's not working. I'm shortly before giving up. Anybody any ideas ??? ASUS DUAL_GTX1070_8GB_Measurements_Top.jpg Last edited by DynaxSC; 01-25-2022 at 01:53 PM.. |
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