| Electronics > Repair |
| Agilent 53132A Counter Repair (FIXED and Upgraded) |
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| f14:
Im checked . all rail stable and AC ripple ~<300mV for 4 rails 5V/12V/-12V and -9V. I measured on power input connector (A1 mainboard) I just remove some E-cap from A4 power suppy to check value with LCR meter and it still within specs |
| HighVoltage:
If I look at an older manual, it says: INTERP FAIL Interpolator calibration failed on the last measurement; therefore, no valid measurement was taken. So, I would start at the signal input and work my way through signal path until you find something that makes no sense. Sometimes this can be tedious. |
| f14:
--- Quote from: HighVoltage on April 02, 2022, 02:52:08 pm ---If I look at an older manual, it says: INTERP FAIL Interpolator calibration failed on the last measurement; therefore, no valid measurement was taken. So, I would start at the signal input and work my way through signal path until you find something that makes no sense. Sometimes this can be tedious. --- End quote --- I use a Printer ON via RS232 to see more details about this error and I have 4 line: -Interpolator : A , MRC mode Fail -Interpolator : B , MRC mode Fail -Interpolator : B , CC mode Fail -QSPI : HEX DAC Fail Because I have only one 53131a so I can't check a good 53131a signal to compare :( |
| HighVoltage:
It is not easy to give advise at this stage. All I know from experience is that you start looking at signals and suddenly you come to find one culprit. Maybe you can borrow the same counter and compare signals. |
| Clemgill:
Hi, I took me 3 days to successfully repair my HP53132a PSU that failed recently (relay clicking frantically) 1 resistor was open loop, 1 resistor was shortened, 1 capacitor was shortened (on the -12V output). The image of the schematics (found on this site) was very helpful. I found the drawing accurate regarding the identification and placement of components, but however there were errors or misplacement on labels. If someone could send me a copy of the electronic file I could update it. A bit long-lasting and tedious experience, but rich (and finally successful !) Lessons learned : - It takes time, don't give-up... - Good to be retired => time is life (and not money...) - Please short-circuit the pins of the main cap (C1 with 150ohm resistor) before touching the board (300 Volts looming !...) -> It never happened to me..... :) - Start with the outputs : If there are still talking a bit, but one is full zero Volt => focus on this one - Focus on the larger, power dissipating resistors... and the electrolytic caps naturally - Thanks to the good old times board design : through hole components and everything labeled ! Gilles. |
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