Switch - Vibrato LDR, for Fender® Amps

Switch - Vibrato LDR, for Fender® Amps

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Optocoupler. Vibrato LDR for Fender Amps. Fix the dead LDR-style tremolo on your vintage Fender amps as well as others.

  • Non-polarized optical side is indicated by silver dot and slightly longer leads
  • Resistive side is indicated only by slightly shorter leads
  • This neon lamp optocoupler is commonly referred to as a roach
Item ID:
Replacement Type:
Item Length1.295 in.
Item Width0.347 in.
Packaging Information
Packaging Dimensions1.3 in. × 0.4 in. × 0.4 in.
Weight (Packaging)0.0044 lbs.

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Specifications, Files, and Documents

GIF: Specification Sheet Specification Sheet9.26 KB
Questions? Contact us at [email protected], or give us a call at 480-820-5411

Product Reviews

4.95 out of 5 based on 21 reviews
Derek Alderman - March 17th, 2024
5 out of 5

Works like a charm. Perfect for fixing old Fender LDR "roaches". Make sure to check which side is which.

Carl M - June 30th, 2023
5 out of 5

Very weak tremolo before installation. Works great after!

CAS Pro Music - April 7th, 2023
5 out of 5

Very satisfied. The component worked as expected.

Darrell S. - December 18th, 2022
5 out of 5

This is the second LDR that I have purchased from Antique Electronic Supply and it, again did not disappoint. This is the best and only solution that I have found to replace a defective original Fender LDR/neon light combination used in Fender's vibrato circuit. These work great and I have noticed that this LDR has both ends of the black heat shrink encapsulation to prevent external light as well as any contaminants from entering.

JohnL. - October 8th, 2020
5 out of 5

Great part, larger than original in my DRRI but works fine. I still had the ticking after I installed it. After reading a lot of posts on various websites I came to the conclusion it could be my wires. I opened up the amp and removed the guts so I could hear the tick and buzz as I probed with a wooden chop stick. I moved each of the blue wires on the different tubes and found the culprit and the ticking stopped. Hope this helps someone. Be very careful if you try it.

JohnL. - September 30th, 2020
5 out of 5

I put one of these in my 65 Deluxe Reverb reissue. It quieted it down considerably. I think I'll also add the .01 mfd cap for good measure and be done with it (as per The official Fender solution (Service Bulletin number 9). I am glad I went ahead with this. I had repaired a few vintage Fenders but I wanted to try it on the reissue and it worked for me. I hadn't seen anyone comment on this so I wanted to share with anyone interested.

powdermnky007otmail.com - July 30th, 2020
5 out of 5

Worked great and fixed my trem issues.

Paul - December 1st, 2019
5 out of 5

Installed easily in my silver face Vibrolux Reverb. Fixed the weak vibrato and now I have a strong throb like new.

Olav Lindkjølen - October 25th, 2018
5 out of 5

Perfect, fits like a charm. With DHL express, it was not too expensive in shipping to Norway, and the 2010 Fender Deluxe Reverb Reissue 65 vibrato works like a charm again ??

Faceman - June 5th, 2018
5 out of 5

Worked great. Easy to install and got rid of the Silverface "tick"