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macpro no chimes boot problem gpu

  1. M

    MP 1,1-5,1 Mac Pro 5.1 Tray Black Screen Problem (PLEASE HELP)

    Hello, I have two Mac Pro 5.1 (2010) and have 2 problem. First Computer: It doesn't boot, no fans, no chime, no white led in front. When I turn it on, only Graphics card works and some red leds... There is a 'tik tik tik' voice coming from Power supply Second computer: I put tray of this...
    • macuser5.1
    • Thread
    • black screen startup mac pro (2010) mac pro tray macpro no chimes boot problem gpu
    • Replies: 7
    • Forum: Mac Pro
  2. P

    issue in 820-3115 board with U6100 on 5 & 6 pins ( no chime )

    so i recently have a board with no chime ( 820-3115 it must be a A1278 from 2012 ), following the circuit schematic i found that component U6100 does not have voltage in 5 & 6 pins, those are for SPI_MLB_MOSI and SPI_MLB_CLK, i follow the trace until U1800, all traces have continuity but...
    • pavulzavala
    • Thread
    • 820 3115 macpro no chimes boot problem gpu no chime
    • Replies: 0
    • Forum: MacBook Pro
  3. Y

    MacPro mid-2010, Boot problem No chimes No display

    Hi every one, Sorry to bother you guys with an other booting problem, after reading a lot of stuff, i didn’t find any solutions yet, maybe you can help. configuration : Mid 2010 6x3,33Ghz Graphic card : GT120 10.10.5 Symptoms : After an update of windows 10 on bootcamp, the mac turned off, for...
    • yzrec
    • Thread
    • macpro no chimes boot problem gpu
    • Replies: 17
    • Forum: Mac Pro
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