| Electronics > Repair |
| Tektronix DPO4054 stucked at tektronix splash screen |
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| pinkman:
This is an excellent follow-up, there should be a thread dedicated to fixing these scopes due to the small amount of information out there. Nice work. |
| dogbert:
Any idea about where the console port is? Thanks |
| analogRF:
--- Quote from: mairo on April 12, 2019, 01:22:25 am ---My scope is alive! Changed U380 and now boots and works well. It was originally stuck on the splash screen. Early last year when the problem occurred, I took it to Tek service center, where after staying for 3 weeks, the verdict was that it 'probably' needs a new mother board, which will cost ~US$3000.00, but also not 100% sure if it will work after the swap :palm: :palm:. I told them that I will not be going ahead with this 'repair' and so they offered me a 'free' disposal of the unit, however I still had to pay AU$110.00 for the service of looking at the scope. .... I payed the service fees and took the scope back - I can sell just the buttons for 5-10 bucks each ... Thank you to whoever found and shared the solution! Forgot to add: The exact part number I used is HMC438MS8GE, from Digikey. P/n 1127-2962-ND. Hot air is required for the rework as the IC has a pad underneath. --- End quote --- did you also look at the debug serial port? can you let me know where the serial port is located? |
| mairo:
No, I have not looked at the serial port, neither know where it is. The fix was just done by replacing the IC. |
| winniethepooh_icu:
Congrats on fixing an excellent scope. We have quite a few of these on the bench with their TDP active probes and everyone loves them. I prefer one over any of the new agilent machines we have. We have had to open a few of them up over the years (the ones that get left on all night every night by the old timers) but have only had power supply circuit failures. Beautiful machines. |
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