Unlike more modern Peterson strobes, legacy models such as the Peterson 400, 420, 450 and 700 do require occasional calibration.

If you require service, please open a support ticket and return the tuner for repair.

Our currently available tuners are the StroboStomp HD, StroboStomp LE, StroboStomp Mini, StroboPLUS HDC, AutoStrobe Model 490, AutoStrobe Model 490-ST, AutoStrobe Model 590, and SC-5000 II.

We do service discontinued products.

If you need to send your tuner in for repair, please open a support ticket.

All products returned for service must have a support ticket number on the outside of the box as well as on the accompanying paperwork on the inside of the box. If you have not registered your tuner, you must do so before returning it. Include a description of your problem. Please be specific about the type of malfunction as well as the conditions under which it occurs.

There is a minimum charge of $80.00 US plus a shipping charge for all Mechanical Peterson tuners received and a minimum charge of $40.00 US plus a shipping charge for all LCD Peterson tuners (unless subject to Peterson warranty). Payment options include PayPal, VISA, MasterCard, AMEX and Discover Card.

NOTE: For international (non-USA) repairs and for all Conn tuner repairs, a different procedure may apply. If you would like an advance estimate for service, you must include a request in writing with the tuner you ship.

Contact and Shipping Details:

For service of Peterson tuners:

Peterson Electro-Musical Products, Inc. 11601 South Mayfield Ave. Alsip, IL 60803 USA

TEL: 708-388-3311 (ext. 143) FAX: 708-388-3341

Email: techwest@petersonemp.com

Adjust your instrument until the pattern is as close to still as possible. Strobe displays are 'real-time' and extremely precise. They require very fine tuning adjustments to stop the display because the frequency/pitch of any instrument is never totally stable.

You'll quickly learn to read the display, make the most precise adjustments and appreciate the high resolution that only a Peterson provides.

Cases are available for the AutoStrobe™ line, the StroboClip HD and the StroboPLUS HD/HDC.

Cases are available for the AutoStrobe™ line, the StroboClip HD and the StroboPLUS HD/HDC.

• StroboClip HDC
• StroboStomp Mini
• StroboPLUS HDC
• StroboClip HD
• StroboStomp HD
• StroboStomp LE
• StroboPLUS HD
• Stomp Classic Pedal Tuner / Active DI

If you have not registered your tuner, you must do so before opening your support ticket.

All products returned for service must have a support ticket number on the outside of the box as well as on the accompanying paperwork on the inside of the box.

We strongly recommend shipping with tracking information and insurance.
Peterson Electro-Musical Products, Inc., and subsidiaries thereof, are not responsible for lost packages in transit to our repair facility.

Include a description of your problem in both your support ticket and paperwork included with your product. Please be specific about the type of malfunction as well as the conditions under which it occurs. Include your name, address, phone number, and email address on the accompanying paperwork.

There is a minimum charge of $95.00 US plus return shipping charges for all Mechanical Peterson tuners received and a minimum charge of $48.00 US plus return shipping charges for all LCD Peterson tuners (unless subject to Peterson warranty). If you would like an advance estimate for service, you must include a request in writing with the product you ship. If you choose not to have your product repaired, there is a $48 diagnostic charge plus return shipping.

Payment options include PayPal, VISA, MasterCard, AMEX and Discover Card.

Any balance is due within 30 days of the completion of the repair. After 30 days, a storage fee will be charged. After 90 days, your property will be considered abandoned and will disposed of at our discretion.

For international (non-USA) repairs and for all Conn and Node tuner repairs, please open a support ticket as different procedures may apply.

For service of Peterson tuners:

Peterson Electro-Musical Products, Inc.
11601 South Mayfield Ave. Alsip, IL 60803 USA
TEL: 708-388-3311 (ext. 143) FAX: 708-388-3341
Email: techwest@petersonemp.com

To aid musicians not familiar with note names outside the standard EADG(BE) or whatever the original tuning is, choosing -1, -2 etc. will cause the instrument to be lowered in pitch by one, two half steps etc. without the original note names being changed. Any Sweetener settings chosen in conjunction with a drop tuning setting are preserved and applied to the correct strings.

Capo Tuning refers to raising the pitch by means of a Capo d'Astro. To aid musicians not familiar with note names outside the standard EADG(BE) or whatever the original tuning is, choosing +1, +2 etc. will cause the instrument to be raised in pitch by one, two half steps etc. when the capo is applied to the first, second fret etc. without the original note names being changed.

The alternate Key settings are used for instruments played in a key other than the key of C. The note display will change so the proper note for those instruments will be shown. Common examples would be Saxophone (Eb), Trumpet (Bb) and French Horn (F).

Sometimes the SUS mode will help when tuning an acoustic instrument in a very loud environment, but generally it is designed for shot-voiced instruments like tenor banjo and similar percussive but brief signals.

Powering the unit with the provided or suggested power supply can also help determine if the LCD screen is in fact failing. If the LCD is still dim after changing the batteries or plugging the unit directly into a wall outlet, please open a help ticket so we may assist you further.