Just wanted to thank you for the useful information and repair of the 3466A. I've had one on my bench for 5 years or more and love it. However recently it went u/s with a +OL message causing me to search the web for info on repair and found your page. Turned out the repair was simple. The 2200 uF cap on the + power supply had gone O/C supplying 120 Hz to the rest of the instrument. New cap solved that problem. However seeing your mod for a Lithium battery triggered a desire to do the same. My meter had the battery electronics but never had a battery. I went ahead and made the mods you set out and installed a "battery" with two of the Li cells. Runs beautifully. Charges to 8.33V runs for more than 5 hours before cutting off at a little over 7 V. Reccomend the fix. 73, W0QM
Thanks so much for the video. Just picked one up for junk value and found the socketed IC had crept out. Reseated and tested, now working as well as the fluke. Next to calibrate and replace the electrolytics!
I enjoyed watching this repair. Interesting how many issues developed while the meter was in storage! My repair was a lot easier. When I received my HP 3466A it had intermittent operation. I cleaned and lubricated the switch bank and it has been working ever since. I also replaced the Gates cells with a 6v SLA battery. It is my daily goto meter when I am working at my bench. I am amazed as to how accurate it is on all ranges - checked with a HP 34401A. Love this old HP stuff.
Was waiting for part 2 "Upgrade battey" and maybe a Part 3 "Basic Calibration" but it never happen. Thank's for this video he help a lot learning from what you find out.
Hi, thanks. The battery story is continued at www.djerickson.com/hp3466a-dmm I didn't think it was worth another video. Calibration is described in the service manual. It's old-school calibration with lots of trimpots.
@8:15 : About the replacement Battery is expensive but, I replaced my battery and it charges/works fine to power the unit. No I have to fix the DMM part of it - My HP3466A displays OL constantly so I look forward to watching Part 2 !!! Thanks for making your videos. Liked and Subd.
Thanks. I just found out that the HP 3435A is this guys' 3.5 digit sibling. Same case, battery and charger, controller. It explains the extra digit stuff.
Superb video. Congratulations! I have one this and is a wonderful DMM! Yesterday I made a repair in my DMM but is a simple repair. I have one of 2.7 ohm resistor in series with transformer primary winding burned. I have plans to follow your retrofit to put 2 18650 batteries to power my DMM. I was thinking about it and today I read your text explaining how to adapt them.
Interesting repair(s), thanks for the detailed troubleshooting. A fairly weird unit with 7v logic, 10KHz clock and no micro! I have some HP3468As, and they have their own set of (quite different) weirdnesses...
I did the change to Li batteries. It's described on my HP3466 web page www.djerickson.com/hp3466a-dmm. I don't think I'll do a video on it. Thanks for asking.
Just wanted to thank you for the useful information and repair of the 3466A. I've had one on my bench for 5 years or more and love it. However recently it went u/s with a +OL message causing me to search the web for info on repair and found your page. Turned out the repair was simple. The 2200 uF cap on the + power supply had gone O/C supplying 120 Hz to the rest of the instrument. New cap solved that problem. However seeing your mod for a Lithium battery triggered a desire to do the same. My meter had the battery electronics but never had a battery. I went ahead and made the mods you set out and installed a "battery" with two of the Li cells. Runs beautifully. Charges to 8.33V runs for more than 5 hours before cutting off at a little over 7 V. Reccomend the fix. 73, W0QM
Thanks so much for the video. Just picked one up for junk value and found the socketed IC had crept out. Reseated and tested, now working as well as the fluke. Next to calibrate and replace the electrolytics!
I enjoyed watching this repair. Interesting how many issues developed while the meter was in storage! My repair was a lot easier. When I received my HP 3466A it had intermittent operation. I cleaned and lubricated the switch bank and it has been working ever since. I also replaced the Gates cells with a 6v SLA battery. It is my daily goto meter when I am working at my bench. I am amazed as to how accurate it is on all ranges - checked with a HP 34401A. Love this old HP stuff.
Was waiting for part 2 "Upgrade battey" and maybe a Part 3 "Basic Calibration" but it never happen. Thank's for this video he help a lot learning from what you find out.
Hi, thanks. The battery story is continued at www.djerickson.com/hp3466a-dmm
I didn't think it was worth another video.
Calibration is described in the service manual. It's old-school calibration with lots of trimpots.
I love this multimeter, I recently bought it. and it's fast in autorange mode when measuring resistors. It would be good if a buzzer could be inserted
Hey Dave! Glad to know you are well! We are missing you!
@8:15 : About the replacement Battery is expensive but, I replaced my battery and it charges/works fine to power the unit. No I have to fix the DMM part of it - My HP3466A displays OL constantly so I look forward to watching Part 2 !!! Thanks for making your videos. Liked and Subd.
Thanks. I just found out that the HP 3435A is this guys' 3.5 digit sibling. Same case, battery and charger, controller. It explains the extra digit stuff.
Superb video. Congratulations! I have one this and is a wonderful DMM!
Yesterday I made a repair in my DMM but is a simple repair. I have one of 2.7 ohm resistor in series with transformer primary winding burned. I have plans to follow your retrofit to put 2 18650 batteries to power my DMM. I was thinking about it and today I read your text explaining how to adapt them.
Where is this "text explaining how to adapt them" online? PLEASE - I want to do so like wise!!!
@@joeteejoetee Go to Dave Ericson engineering He made a you tube video explaining how to do this.
Interesting repair(s), thanks for the detailed troubleshooting. A fairly weird unit with 7v logic, 10KHz clock and no micro!
I have some HP3468As, and they have their own set of (quite different) weirdnesses...
Part 2? Or did it go the way of the lead acid batteries?
I did the change to Li batteries. It's described on my HP3466 web page www.djerickson.com/hp3466a-dmm. I don't think I'll do a video on it. Thanks for asking.