phase linear 400
- Thread starter gene french
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and it put a black spot
dcp engaging...blue led lights when engaged ...right channel bias set...left side unresponsive....b+- voltage present
+- 15 volt present...
i checked every component on the left back plane comparing to the right...
found bad/shorted/open resistors...one left a mark on the board...it rubbed off...wasnt noticed at first...r3 i believe...i feel confident i am now ok...
dcp engaging...blue led lights when engaged ...right channel bias set...left side unresponsive....b+- voltage present
+- 15 volt present...
i checked every component on the left back plane comparing to the right...
found bad/shorted/open resistors...one left a mark on the board...it rubbed off...wasnt noticed at first...r3 i believe...i feel confident i am now ok...
They can be calibrated but for a hand held meter they are fine without.
If you need higher precision, get a bench top meter.
and the low end Flukes (old 10 and 11 etc.) cannot be calibrated. I had a 10 for decades for simple volt measurements of the guns.
The 77-V I have now was new via eBay, and it’s working great. I’m on my second battery now. I also splurged on a case which also holds an amp clamp (also Fluke) that does AC and DC amps. Most are AC only…
Good stuff.
If you need higher precision, get a bench top meter.
and the low end Flukes (old 10 and 11 etc.) cannot be calibrated. I had a 10 for decades for simple volt measurements of the guns.
The 77-V I have now was new via eBay, and it’s working great. I’m on my second battery now. I also splurged on a case which also holds an amp clamp (also Fluke) that does AC and DC amps. Most are AC only…
Good stuff.
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Gene, if you splurge for a Fluke, get the case/holster and ORIGINAL leads. The 77 B/N manual describes calibration, but one needs the proper calibrated voltage source, very expensive, so I've never pursued it or felt the need.
The 77 B/N were produced specially for the Federal Government and were very common in all military maintenance shops I worked in.
If I was buying my first Fluke, I'd shoot for something newer than a old B/N.
All the aftermarket miniclip leads and such fit perfect.
The 77 B/N were produced specially for the Federal Government and were very common in all military maintenance shops I worked in.
If I was buying my first Fluke, I'd shoot for something newer than a old B/N.
All the aftermarket miniclip leads and such fit perfect.
I use a Fluke 77 and an 89............... They are awesome. Spend a few extra bucks and don't scrimp on test equipment. When you rely on them to troubleshoot all your stuff, $150 is cheap. Cheaper meters will give you cheaper results.
https://www.ebay.com/itm/1342028674...wWie7DWPJOZltm6oRnq5sCvek=|tkp:Bk9SR-bEicbbYA
https://www.ebay.com/itm/1342028674...wWie7DWPJOZltm6oRnq5sCvek=|tkp:Bk9SR-bEicbbYA
I use my 77 almost daily and I bought it in about 2000 when taking some tron classes after I retired from the Nav. It has never failed me. Well worth the money no matter what it cost. I always stress to not skimp when it comes to test eq. We've had several members here over the years trying to repair shit with a $10 meter and they seem to always be an issue. I might keep a $10 meter in the tool box for my truck but that's about it. When you use a meter almost daily, and it cost $200 and you are still using it 25 years later, screw the cost.
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