Products > Test Equipment
Old Fluke Multimeters
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particleman:

--- Quote from: GregDunn on September 11, 2018, 07:04:16 pm ---TWO of them.  Nice.   :-+  Is it worth scanning the Bay for an inexpensive one (there seem to be two prices: $400 and $50 ;D ) these days?  I seem to recall people mentioning that a lot of DMMs get sold as "for parts" even though they're somewhat functional and repairable - is that likely with an 8800?  I've never had to fix a Fluke meter so I don't know what I might be getting into; but if it's a reasonable thing to look for I can certainly start watching for one.

--- End quote ---
Both of my 8800A we bought locally from the popular classified site. C21 had leaked on both of them. Recapped them both cleaned the switches had them calibrated ($40 each) and have not had 1 issue with them in the 5 years I have had them.
rsjsouza:

--- Quote from: GregDunn on September 11, 2018, 07:04:16 pm ---TWO of them.  Nice.   :-+  Is it worth scanning the Bay for an inexpensive one (there seem to be two prices: $400 and $50 ;D ) these days?  I seem to recall people mentioning that a lot of DMMs get sold as "for parts" even though they're somewhat functional and repairable - is that likely with an 8800?  I've never had to fix a Fluke meter so I don't know what I might be getting into; but if it's a reasonable thing to look for I can certainly start watching for one.

--- End quote ---
The hardest fix I had to do was to repair my dad's old 8020A (portable) where the LCD had leaked. I followed Mr. Modemhead's procedure.

The other two (8060A and 8062A) only required capacitor replacements.

My Fluke 27/FM has a fading LCD, but I expect it to be a simple cleaning job of the zebra strips. 
med6753:

--- Quote from: GregDunn on September 11, 2018, 07:04:16 pm ---TWO of them.  Nice.   :-+  Is it worth scanning the Bay for an inexpensive one (there seem to be two prices: $400 and $50 ;D ) these days?  I seem to recall people mentioning that a lot of DMMs get sold as "for parts" even though they're somewhat functional and repairable - is that likely with an 8800?  I've never had to fix a Fluke meter so I don't know what I might be getting into; but if it's a reasonable thing to look for I can certainly start watching for one.

--- End quote ---

Going after the sub $100 USD Flukes on Ebay can be a total crap shoot. In my collection of Flukes it has ranged from just needing a tweak (8050A) to major repair (8010A). The others fell somewhere in between those 2 extremes. In all cases I purchased "powers up but not tested" which we all know is the bullshit statement that you can't return it if it doesn't work. So I knew what I was getting into and was prepared to perform repairs if required.

The exception was the 8800A. It was advertised as fully functional for the bargain price of $80 USD plus shipping. So I jumped on it right away. But it did not work when I received it. Power up but no measuring and wouldn't zero. I contacted the seller immediately and praised him for his packaging (was excellent) but unfortunately the DMM does not work. He responded in less than an hour and apologized and offered to refund me $60 USD plus I could keep the DMM. I was flabbergasted that he would make an offer like that and I accepted. And he made good on the refund. Within a day $60 USD was refunded. The best part is within 15 minutes of opening up the 8800A I found the problem. C18 was shorted dragging down the +35V to +25V. I recapped the entire power supply and started calibration and discovered that all parameters were dead nuts. No adjustments required. So it turned out to be an excellent score and sometimes it goes in your favor.  :-+       
GregDunn:
Yes, I've done the 8020A fix; that was a lot of fun.   >:D

Sounds like auction site purchases for this instrument come down to "do you feel lucky, punk?" and willingness to dive in and fix odd failure modes.  I guess that's why I like hamfests - if you can actually find something you have hands-on right away and an honest seller will let you power it up first.

Thanks, all, for the info.  I'll think about my next step...
bitseeker:
Next step: Buy half a dozen of them and Dr. Frankenstein a good one or three from that DMM morgue.  :-DMM
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