I'm revisiting the NAD 3020 Series 20 Amplifier (late 70s vintage) that I worked on a while back. Unfortunately, I managed to completely short out the power transistors so there's some troubleshooting and repairing to be done in this video.

My first video about this amplifier:    • NAD 3020 Series 20 Vintage Amplifier ...  
My final video about this amp:    • NAD3020 New Speaker Terminals and Adj...  

NAD 3020 Service Manual (for this older model): https://elektrotanya.com/nad_3020_sm....

Dim bulb tester info: https://antiqueradio.org/dimbulb.htm

Joystick repair video:    • Extreme Competition Pro Joystick Repair  

Component Tester*:
US: https://amzn.to/2SN4XBu
UK: https://amzn.to/2Rg7L9S
DE: https://amzn.to/3fEhGzn

UHU Plast Special plastic glue*:
UK: https://amzn.to/3tik1oz
DE: https://amzn.to/3cqEjpU

TIME STAMPS:
0:00 Introduction
1:30 Current Status of the NAD
3:49 Checking for shorted Transistors
5:47 Desoldering Driver Transistors
6:54 Testing Driver Transistors
7:56 Checking for other Shorts
8:20 Replacement Transistors
10:02 Fitting new Transistors
11:12 Testing with Dim Bulb Tester
15:05 Hooking up Speakers
19:36 Plastic Trouble
23:18 Thank you & Good Night

---------------------------------------­-----

MUSIC by FOCUS 10 https://focus10music.bandcamp.com

EQUIPMENT AND TOOLS I USE: https://kit.co/janbeta *
TWITTER:   / thejanbeta  
PATREON:   / janbeta  
WEBSITE: https://www.janbeta.net
TWITCH:   / thejanbeta  

YT CHANNEL MEMBERSHIP:    / @janbeta  

Thanks for watching!

Stuff marked with "*" contains affiliate links. You don't pay anything extra and I get a little commission from everything you buy through the links (even if you buy something different there).

#JanBeta #NAD3020 #VintageAudio