Changes in pitch when playing vinyl on relatively new turntable

Changes in Pitch When Playing Vinyl on Relatively New Turntable

Pitch changes can be a frustrating issue when playing vinyl records on a turntable, even on relatively new ones. This article aims to explore the possible causes of pitch changes and provide some troubleshooting steps to address this problem.

It is important to note that the issue of pitch changes is not specific to a particular record or a certain place or time on the record. The changes in pitch can occur randomly, approximately 2 to 3 times per side, and last for 2-8 seconds.

Firstly, it is unlikely that the problem is caused by the vinyl records themselves, as it happens with different records. Therefore, we need to look into other factors that could contribute to this issue.

Possible Causes of Pitch Changes

1. Loose or Stretched Belt: One possible cause of pitch changes is a loose or stretched belt in the turntable. While Technics turntables are known for their rock-solid speed consistency, if the turntable has a belt, it is worth checking if it is seated correctly and not stretched.

2. Internal Pots on the Motor Control Board: Another potential cause of pitch changes could be the internal pots on the motor control board, especially if the turntable has variable pitch control. These pots may require adjustment or cleaning to ensure stable pitch performance.

3. Speed Selector Issues: Cleaning the speed selector and ensuring it is functioning properly may also help address pitch issues. Over time, dust and debris can accumulate, affecting the selector’s performance and causing pitch instability.

4. Pulley and Belt Contact: It is recommended to clean the pulley and the underside of the platter where the belt makes contact. Oils from prolonged use can coat these parts, leading to inconsistent belt grip and subsequent pitch fluctuations.

5. Speed Adjustment: If the turntable has a speed adjustment, working it back and forth to clean the contacts may help with pitch stability. Corrosion or dirt on the contacts can disrupt the signal and result in pitch variations.

Troubleshooting Steps

Here are some general troubleshooting steps to address pitch problems on a turntable:

1. Check the belt: Ensure that the belt is properly seated on the platter and pulley and is not stretched. If necessary, consider replacing the belt with a new one.
2. Inspect the motor control board: If the turntable has variable pitch control, check the internal pots on the motor control board. Cleaning or adjusting these pots may help stabilize the pitch.
3. Clean the speed selector: Remove any dust or debris from the speed selector and ensure it moves smoothly between different speeds.
4. Clean the pulley and platter: Use a suitable cleaning agent to remove any oils or contaminants from the pulley and the underside of the platter where the belt makes contact.
5. Work the speed adjustment: If the turntable has a speed adjustment, move it back and forth several times to clean the contacts and improve pitch stability.
6. Consult the manual: Always refer to the manufacturer’s instructions and the turntable’s manual for specific troubleshooting steps and guidance.

By following these steps, you can effectively address pitch changes on your turntable and enjoy a more consistent and accurate playback of your vinyl records.

Sources:
– Music Fans Stack Exchange
– AudioReview Analog Room Forum
– TopRecordPlayers.com

FAQs

Changes in Pitch When Playing Vinyl on a Relatively New Turntable

Why do pitch changes occur when playing vinyl records on a turntable?

Pitch changes can occur due to various factors such as a loose or stretched belt, issues with the motor control board, or problems with the speed selector.

Are pitch changes specific to certain records or parts of the record?

No, pitch changes are not specific to a particular record or a certain place or time on the record. They can occur randomly, approximately 2 to 3 times per side, and last for 2-8 seconds.

Can pitch changes be attributed to the vinyl records themselves?

No, it is unlikely that the problem is caused by the vinyl records. Pitch changes can happen with different records, suggesting that the issue lies with the turntable rather than the specific vinyl being played.

What are some common causes of pitch changes on a turntable?

Some common causes of pitch changes include a loose or stretched belt, issues with the internal pots on the motor control board, problems with the speed selector, and contamination or oil buildup on the pulley and platter where the belt makes contact.

How can I troubleshoot pitch issues on my turntable?

Some troubleshooting steps to address pitch problems include checking and adjusting the belt, inspecting and cleaning the motor control board pots, cleaning the speed selector, cleaning the pulley and platter, working the speed adjustment, and consulting the turntable’s manual for specific troubleshooting guidance.

Should I consider replacing the belt on my turntable?

If the belt is loose, stretched, or showing signs of wear, replacing it with a new belt may help address pitch problems and improve overall performance.

Can cleaning the speed selector help with pitch stability?

Yes, cleaning the speed selector and ensuring it moves smoothly between different speeds can help address pitch instability caused by dust or debris buildup.

What other factors should I consider when troubleshooting pitch changes on my turntable?

In addition to the belt, motor control board, and speed selector, it is also important to clean the pulley and the underside of the platter where the belt makes contact. Additionally, working the speed adjustment back and forth to clean the contacts and consulting the turntable’s manual for specific troubleshooting steps are important factors to consider.