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The EICO B, the resistance capacitance bridge and the . The Y cap was taken from an old SMPS – (C7 in the original schematic). Download EICO B CONSTRUCTION MANUAL. service manual & repair info for electronics experts. A quick view of the power supply schematic, shared by the Knight, Lafayette, and Like the Knight and the Lafayette, the Eico B substitutes eye-closure for.

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Superb Craftsmanship throughout – well packed – Exceeds expectations in every detail – restoration beyond actual eras original accuracy – thx u Verified purchase: This item doesn’t belong on this page. You could suffer a fatal electrical shock! I was blown away by how well kept it was, and went there to pick it up and was amazed to see the amount of electronic instruments he had — collections all the way from I have put in a new power cord, a new y-capacitor and replaced all the electrolytic ones.

I was checking an electrolytic V uF cap and rand down the voltage pot from V to 0 and saw some blue flashes from inside. I replaced 3 capacitors 2 didn’t look good and one was wrong value.

Ensure you are skilled enough to do this. Looking for other manual? I was looking for a decent heathkit or the EICO to help me restore it when I stumbled upon this little treasure.

EICO 950B – Repair/Restoration

But was lucky it was just the pot. As you mentioned the leakage tets function is a really valuable function that is not found in many capacitor testers today. It seems to be one of the most popular units out there.

Even if you are familiar with solid state electronics, do not try this unless you really understand the risks involved with working on Vacuum Tubes and High Voltage DC and know the safety procedures to follow.


I definitely need to get the 5W 10K wire wound pot from eBay. The power factor tester too is also quite handy. Email required Address never made public. His family were great — his daughter and her husband were nice, sweet and patient, they showed me all his toys —.

Hi, Nice to see a great equipment being put back to use again. You can write in English language into the forum not only in Hungarian! Also some files are djvu so you need djvu viewer to open them.

This is how pristine it looked when I picked it up. You can login to do that! Do not run down the voltage fast after leak test on a high value cap. For a moment I saw it through the eye tube glass. Fill in your details below or click an icon to log in: His family were great — his daughter and her husband were nice, sweet and patient, they showed me all his toys — Robert Merville Gale — I would like to dedicate this project in memory of this wonderful and brilliant soul. The basic circuit of this unit is very simple.

I had a hard time getting those film caps but managed to get them finally. After verifying the schematics, the first test was the tube test, with just the heater power. You just need to keep the ration capacitance ratio the same.

While I wait for my precision caps to arrive, I can finish rest of the tasks, replace the last few 0. Yes, I learned it the hard way. You need not order the exact value as per original spec, as it is rare.

EICO B – Repair/Restoration – Lazy Electrons

No buttons to hold The think I love the most about this capacitor tester is that you don’t have to hold push buttons in to do a leakage test on electrolytic capacitors. But remember, a very high value cap can load and mabual the rectifier tube. I became curious to know more about him.


I bought the Eico B to play with. It can kill you. This unit was working when I received it. I am ordering pF, pF, 2. The EICO Manua, the resistance capacitance bridge and the capacitor leak tester — I do have other tiny things that can measure capacitance, but nothing compares to this one, or the Heathkit or a high voltage DC capacitor leak tester.

If this is the reason, announce it with the blue man icon on the top and I remove it. If you want to join us and get repairing help please sign in or sign up by completing a simple electrical test or write your question to the Message board without registration.

This file is downloadable free of charge: I contacted the seller and he was a TV repairman from Massachusetts. To find out more, including how to control cookies, see here: As expected, I found broken cables, joints, exposed cabling.

Vintage EICO Resistance Capacitance Comparator Bridge Model 950B

Eico a This unit was working when I received it. Instead, contact your nearest mznual center! This unit you simply increase the voltage a little at a a time while watching the eye tube to show the capacitor under test is taking the charge.

Recently I have begun what might be the start of a nostalgic journey in vacuum tubes. Good luck to the repair! Notify me of new comments via email.