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In this YouTube video I give an overview and demonstration of a piece of vintage test equipment, the EICO Model 377 Sine and Square Wave ...
YouTube-Jeff Tranter
EICO history
Introduction
General specifications
Specifications
Applications
A look inside the unit
Square wave output
Sine wave waveform
Final thoughts
Summary
Overview and teardown of my late 1950s EICO 377 all vacuum tubes audio function generator. Generates both sine and square waves from 20Hz to ...
YouTube-Gary LaRocco
Oscilloscope test
Square wave test
Internals
Underside inspection
Oscillator light bulb
Replacing capacitors
Test run
Conclusion
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YouTube-The Radio Mechanic
Frequency response measurements
Version differences
Internal inspection
Cleaning the chassis
Checking the tubes
Front panel finished
Cabinet inspection
Testing on the Vari-Act
Checking capacitors
Another great restoration! Join Paul in the lab as he completely restores and repairs an EICO model 377 audio generator.
YouTube-Mr Carlson's Lab
Intro
Circuit design
Resistor inspection
Wax coating removal
Recognizing the circuit
Cathode follower buffer circuit
Why use a 6SN7?
Turning on the isolation transformer
Wrap up
I found this piece of vintage test equipment at an antique festival! Support Hack A Week with a donation: ...
YouTube-HackaweekTV
EICO Model 377 Signal Generator
Rear panel
Magic Eye Tube Demo
Demo
Rear panel removal
Tubes and transformers
Bottom circuit board
Reassembly
Future plans
Mothballed and on the shelf for 37 years, this will be it's first controlled power up in nearly 4 decades! A prelude to its restoration, ...
YouTube-DVR Productions
EICO 460 intro
Removing the chassis
Start up procedure
60V AC test
Filament indication
High voltage test
Voltage testing
VACUUM TUBE DESTROYER - EICO 666 Tube Tester. 4.5K views · 3 years ago ...more. The Radio Mechanic. 19.7K.
Test procedure
How to test for shorts
Troubleshooting
EICO Model 625 Tube Tester Demonstration. 1.1K views · 3 years ago ...more. Dado Instruments. 54. Subscribe.
YouTube-Dado Instruments
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Checking a 6KA8 valve
Filament selector
Installing the tube
Checking a PCL85 valve
Quality Test
Valve quality test
Pin straighteners
I've acquired this EICO oscilloscope model 460 (dumped on me, actually) and I'd like to assess it and see if it works.
YouTube-Jim's Radio Shop
Check the Fuse Size
Operating Manual
Schematic
High Voltage Leads
High Voltage Voltmeter
A gift from a viewer of the channel. Needs some help. Let's see what we can do.
YouTube-Jordan Pier
Start the soldering the old caps
Start removing caps
Start yanking parts
Spray some cleaner in the socket
In this video we restore the Eico 324 Signal generator. Support us on Patreon; https://www.patreon.com/theradioshop Contact Information; ...
YouTube-The Radio Shop
Removing the unit from the case
Waste capacitor removal
Front Panel Cleaning
Final Cleaning
Schematic review
Line voltage check
Checking voltages
Testing the Generator
Frequency Check
I found close to 100V and 38uA of current on the chassis of the EICO Model 377 Audio Generator. Lets see what we can do to fix that.
I think the greatest thing this tester has to offer is the shorts and leak functions. This should prevent horribly bad tubes from being used ...
YouTube-DeadKoby
Testing different tubes
Testing a top-cap tube
Testing a GE 807 tube
Testing a 6K6
Testing a healthy tube
DG's Practical Notes © 2021-2022 Daniele Giacomini, appunti2@gmail.com https://linkedin.com/in/appunti2/ ...
YouTube-Daniele Giacomini
Front cover
Warning
Table of context
How it works
The restoration of this unit
Adding a preamplifier
Testing the signal tracer
Probes
Back cover
My 1957 Eico HF-52 tube amplifier was built like crap. I'm trying to fix it, but did I just ruin it? Watch to find out.
YouTube-Flux Condenser Vintage Audio Electronics
DG's Practical Notes, E#4 EICO 324 Signal Generator, 1956. 530 views · 1 year ago ...more. Daniele Giacomini.
Initial troubleshooting
Schematic diagram
Location of components
Alignment
Testing the unit
Written documentation coming along with this video
Picked up another Eico 377 audio generator - this one in the original box. We check out this vacuum tube (valve) based generator, recap it, ...
Unboxing
Tube Side
Under Side
Initial Checkout
Post Recap
Final Checkout
Outro
Finally a close to the EICO 369 sweep generator and more on restoring the Admiral 17T1.
YouTube-bandersentv
I checkout an EICO Model 221 vacuum tube voltmeter, calibrate the DC measurement functions then checkout a solid state Triplett Model 64 ...
Ohm Scale
Ac Voltage
Copper Corrosion
The Schematic
Test the Reverse Voltage
Ac Volts
Rectifier
Audio Output Meter