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Author Topic: Tektronix DPO4054 stucked at tektronix splash screen  (Read 18627 times)

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Offline ApertureScience

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  • Country: de
Re: Tektronix DPO4054 stucked at tektronix splash screen
« Reply #75 on: April 26, 2024, 07:40:29 am »
I now have error messages regarding DramDqPullUpStrength and DramDqPullDownStrength. Im considering putting the old ram chips back and maybe diong a complete reball of U370.
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Offline ApertureScience

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  • Country: de
Re: Tektronix DPO4054 stucked at tektronix splash screen
« Reply #76 on: April 26, 2024, 08:59:22 am »
I remeasured all 75Ohm termination resistors and some seem to measure around 38Ohm. So probably two lines shorted together. I took off all associated ram and no change. So complete reball of U370 it is.  Now waiting for some BGA stencils and solder balls.
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Offline rainbow

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Re: Tektronix DPO4054 stucked at tektronix splash screen
« Reply #77 on: Yesterday at 07:09:44 pm »
Hi ApertureScience,
have you fixed the issue reballing U370?
Thank you
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