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| Is the price right? |
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| Miti:
--- Quote from: thm_w on February 16, 2023, 12:59:47 am ---Buy both of the 34401A's and sell that 3478A. I wouldn't swap the displays over, unless the readings are massively off. --- End quote --- Naah, I won’t sell my 3478A. It is dead accurate and with the extension module and backlight, it is my go to bench instrument. I will compare the three this weekend and decide if I keep them all. I also have a Fluke 8845A but the readings are a bit off on some ranges, compared to 3478A and compared to itself. What I mean is that it reads 3.00057V on the 10V range and 2.9986V on the 100V range for example. And there no way I can adjust the Fluke myself but I can adjust the others. So maybe I’ll sell the Fluke and calibrate the others with the money. |
| Miti:
--- Quote from: robert.rozee on February 15, 2023, 01:50:21 pm ---i found the job of replacing the VFD relatively easy. but the photo you show (in Reply #3) of your VFD looks a little 'odd' to me, almost as if there is perhaps soot on the inside of the perspex filter rather than a failing VFD. could this be from some blown tantalum caps? in particular look at the "ERROR" annunciator, part is lit brightly while part is dim. can others please comment? my own experiences are with a sample size of exactly one. cheers, rob :-) --- End quote --- I’ve opened them both and there’s no blown cap. It was removed from an ATS where it was left on for years. Looks like the anode is simply gone in that area. Error shows up when there is an error in the communication. |
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