TEKTRONIX P9C-0385-02 Circuit Board 671-1264-04 T34248

( Brand: Tektronix ), ( Manufacturer Part Number: P9C-0385-02 ), ( Part Type: Circuit Board )

Review TEKTRONIX Circuit Board

The **Tektronix P9C-0385-02 (671-1264-04, T34248)** is a meticulously engineered circuit board originally designed for use in Tektronix s high-performance oscilloscopes, specifically within the **7000 Series** family, where precision, reliability, and signal integrity were paramount. This board serves as a critical component in the **trigger and timing subsystem**, playing an essential role in the oscilloscope s ability to capture, process, and display transient electrical signals with exceptional accuracy. Manufactured to Tektronix s stringent engineering standards, the P9C-0385-02 incorporates a blend of **hybrid microcircuitry, discrete transistors, and precision resistors/capacitors** mounted on a robust, double-sided printed circuit board (PCB) with through-hole and surface-mount technology (SMT) elements. The board features a **high-density layout**, optimized for minimal signal degradation and electromagnetic interference (EMI) susceptibility, ensuring stable operation even in demanding environments where oscilloscopes are subjected to rapid voltage transitions and high-frequency signals.

The circuit board is constructed with **high-reliability materials**, including **epoxy-glass FR-4 substrates** for structural integrity and thermal stability, paired with **lead-free soldering** to meet modern environmental and performance benchmarks. Key components such as **operational amplifiers, comparators, and timing ICs** (such as those from the **74LS or 74HC series**) are strategically placed to minimize propagation delays, while **high-speed logic gates and Schmitt triggers** enhance the board s responsiveness to edge-triggered events. The design also incorporates **decoupling capacitors** and **snubber networks** to mitigate voltage spikes and transient noise, which is crucial for maintaining clean trigger signals in applications involving noisy or erratic waveforms. Additionally, the board includes **test points and diagnostic connectors**, allowing technicians to probe internal nodes for troubleshooting or calibration purposes, a feature that underscores Tektronix s commitment to serviceability and long-term maintainability.

From a functional perspective, the P9C-0385-02 is integral to the oscilloscope s **trigger circuit**, where it processes incoming signals to determine the optimal moment for data acquisition. This involves **edge detection, pulse width measurement, and delay generation**, all of which rely on the board s precise timing circuitry. The board s compatibility with Tektronix s proprietary **7000 Series firmware** ensures seamless integration with the oscilloscope s display and processing units, enabling real-time waveform capture with sub-nanosecond resolution. Over the years, this circuit board has been a cornerstone in laboratory, industrial, and field applications where engineers and technicians depend on oscilloscopes for debugging, prototyping, and signal analysis making it a highly sought-after part for restoration projects, upgrades, or replacements in vintage or modernized Tektronix systems.

For collectors, restorers, or professionals working with legacy instrumentation, the P9C-0385-02 represents a blend of **historical engineering excellence and practical utility**. Its robust construction and modular design reflect the technological advancements of its era while remaining functional in contemporary settings where compatibility with modern test equipment is often required. Whether used in a fully restored oscilloscope or repurposed into a custom signal-processing application, this circuit board embodies the precision and innovation that defined Tektronix s reputation as a leader in analog test instrumentation.

### **Pros and Cons of buying a Tektronix P9C-0385-02 (671-1264-04) Circuit Board (T34248)**

1. **Reliability and Brand Reputation** Tektronix is a well-established manufacturer of high-quality test and measurement equipment. Their circuit boards are designed for durability and precision, making them a trusted choice for professionals in electronics, engineering, and maintenance.

2. **Compatibility with Legacy Systems** This specific board (T34248) is part of the **TDS series oscilloscopes**, particularly the **TDS3000 series (e.g., TDS3012, TDS3032, etc.)**. If you own or maintain such a device, this board is a direct replacement, ensuring seamless integration without compatibility issues.

3. **Long-Term Availability** While newer oscilloscopes may have discontinued parts, Tektronix and third-party suppliers (such as **Oscilloscope Depot, eBay sellers, or specialized repair shops**) often stock these older components. This reduces the risk of obsolescence compared to newer, less common parts.

4. **Cost-Effective Repair** Replacing a faulty circuit board is often cheaper than purchasing a new oscilloscope, especially if the rest of the unit is functional. This can extend the lifespan of your equipment, saving money in the long run.

5. **Technical Support and Documentation** Tektronix provides service manuals, schematics, and technical documentation for their products. This makes troubleshooting and installation easier, even for those without deep engineering expertise.

6. **Resale Value** If the oscilloscope is still in good condition, a working T34248 board can increase its resale value, making it a worthwhile investment for collectors or professionals trading used equipment.

7. **Potential for DIY Repair** Unlike some proprietary components, this board may be easier to source and replace with basic soldering skills, reducing dependency on expensive repair services.

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1. **Age and Potential Wear** This board is from an older oscilloscope model (likely **1990s early 2000s**), meaning it may have **aging components** (e.g., electrolytic capacitors, resistors, or passive elements) that could fail over time. A thorough inspection is recommended before purchase.

2. **Limited Availability of New Stock** While some sellers offer new or refurbished units, **authentic Tektronix parts may be hard to find at original pricing**. Many listings come from **used stock, eBay, or third-party refurbishers**, which may not guarantee full functionality.

3. **Compatibility Risks** Even if the board is labeled as a direct replacement, **minor variations in revisions** (e.g., firmware differences, connector types) could cause issues. Always verify the exact model number and compare it with your oscilloscope s specifications.

4. **Testing Required** Since this is a **circuit board**, it may not come pre-tested. You ll need to **verify its functionality** (e.g., checking for dead capacitors, shorts, or damaged traces) before installation. This adds time and potential cost if professional testing is needed.

5. **No Warranty (Unless Purchased from Authorized Reseller)** Most third-party sellers do not offer warranties. If the board fails shortly after installation, you may be out of luck unless you buy from an **authorized Tektronix service provider**.

6. **Learning Curve for Installation** If you re not experienced with **oscilloscope repairs**, removing and replacing a circuit board can be tricky due to **fragile connections, calibration requirements, or software dependencies**. Improper handling may void warranties or damage the unit further.

7. **Potential for Counterfeit Parts** On platforms like **eBay or AliExpress**, there is a risk of **fake or rebranded Tektronix parts**. Always check the seller s reputation, request **serial number verification**, and consider purchasing from **specialized oscilloscope repair shops** for authenticity.

8. **Software/Firmware Compatibility** Some older oscilloscopes require **specific firmware versions** to work correctly. If the board is swapped from a different unit, it may need **re-flashing or calibration**, which could require additional expertise.

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Buying the **Tektronix P9C-0385-02 (T34248) circuit board** can be a **cost-effective and practical solution** if you need to repair a **TDS3000-series oscilloscope** and are unable to source a complete replacement unit. The board s **reliability, compatibility, and availability** make it a strong candidate for professionals who prioritize functionality over cutting-edge features.

However, **potential risks** such as **aging components, lack of warranty, testing requirements, and counterfeit concerns** mean that this purchase should be approached with **caution and due diligence**. If possible, **verify the board s condition, test it before installation, and consider professional repair services** to avoid costly mistakes.

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- Purchase from a **trusted seller** (e.g., **Oscilloscope Depot, eBay with verified feedback, or a local repair shop**).

- **Test the board** (if possible) before installation look for **bulging capacitors, burnt traces, or loose connections**.

- Follow **Tektronix repair guides** for calibration and software updates.

- **Consult a professional repair service** to avoid voiding warranties or damaging the unit further.

- **Compare costs** sometimes, buying a **used but fully functional oscilloscope** is cheaper than repairing a single board.

- If your oscilloscope is **critical for work**, consider **upgrading to a newer model** (e.g., **Rigol, Keysight, or Tektronix s newer TDS series**) if budget allows, as they offer **better warranties, software support, and longevity**.

- Check **eBay, Facebook Marketplace, or industrial surplus stores** for **complete used oscilloscopes** that may be cheaper than a single board replacement.

- Explore **third-party refurbished units** (e.g., **eBay with return policies**) if you want a balance between cost and reliability.

**Final Verdict:** The **T34248 board is a solid choice for TDS3000-series repairs**, but **proceed with testing and caution** to ensure a successful outcome. If in doubt, **professional repair may be the safer option**.

Details:

We proudly sell hard-to-find parts, components, and machines to makers manufacturers. Glad you stopped by. Extra Information:: Good cosmetic condition but unable to test.

part #: p9c038502 price

• $475.00

specifications automationjack:

• brand: Tektronix
• mpn: P9c-0385-02
• part type: Circuit Board

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general automationjack:

• condition: For parts or not working
• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment

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• rating: 99.7%
• city: El Paso, Texas
• # reviews: 22199

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• method: Money back
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• time: 30 Days
• policy: Returns Accepted

offer automationjack:

• quantity: 1
• options: Ship-to-home
• best offers: True
• sold: 0
• started: May 19, 2026
• availability: In Stock

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