| Products > Test Equipment |
| Video Teardown and Repair of an Agilent E4433B ESG-D Signal Generator |
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| syau:
--- Quote from: syau on July 16, 2020, 03:07:43 am ---Sorry for digging out this old thread, my unit has the same issue and I am finding a way to fix it (besides soldered 2 wire) (Attachment Link) --- End quote --- Fixed by replacing the Q772 with MMBT3906LT1G and CR771 with MMBD1201. |
| TK:
--- Quote from: syau on July 16, 2020, 10:02:56 am --- --- Quote from: syau on July 16, 2020, 03:07:43 am ---Sorry for digging out this old thread, my unit has the same issue and I am finding a way to fix it (besides soldered 2 wire) (Attachment Link) --- End quote --- Fixed by replacing the Q772 with MMBT3906LT1G and CR771 with MMBD1201. --- End quote --- It worked for me as well, no more UNLEVELED error! |
| syau:
Anyone managed to “adjust” this unit without using the Agilent software ? The reason for asking is my unit have 4dbm lost on 4GHz. |
| syau:
--- Quote from: syau on November 08, 2020, 11:14:44 am ---Anyone managed to “adjust” this unit without using the Agilent software ? The reason for asking is my unit have 4dbm lost on 4GHz. --- End quote --- Replacing the RPP didn’t help but bypassing it with semi rigid did :-// |
| Miek:
Just to chime in with another data point, I recently repaired an E4433B that was showing "unlevel" and no output. After probing along the RF path on the output board I found a lot of loss along the burst mod diodes and only around 4.2V bias across them. Replacing Q772 fixed it for me too! |
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