Uploaded November 2023 | Updated September 2026, 2 weeks ago

---

I'm repairing a Sony TA-F550ES amplifier from the early 90s that had some intermittent sound issues.

TA-F550ES Service Manual:
elektrotanya.com/sony_ta-f550es.pdf/download.html

I replaced the original Omron G5R-2232P protection relays with the currently available equivalent Omron G2RG-2A4 24VDC type which can be purchased from many electronics parts stores.

TIME STAMPS:
0:00 Introduction
2:21 A Look inside
6:49 Setting the Idling Current
10:48 Troubleshooting
13:39 Disassembly
22:18 Replacing the Speaker Protection Relays
26:43 Dust Removal & Reassembly
28:55 Cleaning Potentiometers & Switches
45:12 Reassembly
46:11 Final Test Run
48:32 More Cleaning & Full Reassembly
50:45 Thank you & Good night

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

MUSIC by FOCUS 10 focus10music.bandcamp.com

EQUIPMENT AND TOOLS I USE: kit.co/janbeta *
MERCHANDISE: janbeta.creator-spring.com
MASTODON: https://chaos.social/@janbeta
PATREON: patreon.com/janbeta
KO-FI: ko-fi.com/janbeta
WEBSITE: janbeta.net
TWITCH: twitch.tv/thejanbeta

YT CHANNEL MEMBERSHIP: youtube.com/channel/UCftUpOO4h9EgH0eDOZtjzcA/join

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 #Sony #VintageAudio #VintageHifi #Repair #Sony550ES #SonyTAF550ES #Amplifier #Hifi #SpeakerRelays #Omron #IntermittentChannels #IntermittentSound #IdlingCurrent #Disassembly #Reassembly #Teardown #Service #Restoration #Refurb