APPLE 820-0174 Macintosh Logic Mother Board Repair

( Brand: Apple ), ( Manufacturer Part Number: 820-0174 ), ( Model: MACINTOSH ), ( Part Type: Board ), ( Country/region Of Manufacture: United States )

Review APPLE Plus Logic Mother Board Needs Repair

Apple Macintosh Logic Mother Board (Model Number: 820-0174) - 1985 Vintage Repair Part

The Apple Macintosh Logic Mother Board (Model Number: 820-0174) is a vintage electronic component taken from the iconic Macintosh computer system first introduced in 1984. This motherboard is a crucial part of the Macintosh 128K and 512K systems, serving as the central hub for various system components and peripherals.

This motherboard is built with a combination of surface-mount and through-hole technology, showcasing the advanced engineering practices of the late 1980s. Its primary function is to manage the digital logic circuits, input/output (I/O) operations, and memory interfaces.

Measuring approximately 13.4 x 13 cm, the motherboard has a significant number of integrated components. Some of these components include the Motorola 68000 microprocessor, ROM chips, RAM slots, clock generator, serial I/O controller, interrupt controller, and custom Apple-designed logic chips.

The Macintosh Logic Mother Board, 820-0174, features a 16-bit data bus and a 20 MHz clock speed. It uses a combination of 16K x 8-bit ROM chips and 64K x 8-bit RAM chips for its read-only memory (ROM) and random-access memory (RAM) respectively. This motherboard also supports external expansion via the Apple IIe bus and the NuBus slot.

The 820-0174 Apple Macintosh Logic Mother Board is an essential component for those looking to restore, repair, or build vintage Macintosh systems. With its historical significance and the challenge of working with vintage electronics, this motherboard is a must-have for collectors, hobbyists, and computer history enthusiasts.

Please note that working with vintage electronic components requires a good understanding of electronics and potential risks involved. Always ensure to take appropriate safety measures and follow proper repair procedures to avoid any damage or harm.

Buying an Apple Macintosh Logic Mother Board (Model Number: 820-0174) from 1985 for repair purposes can be a challenging decision due to its vintage nature and potential compatibility issues with modern systems. Here are some pros and cons to help you make an informed decision.

1. Authenticity and Historical Value: Owning and repairing a vintage Apple Macintosh motherboard can be an exciting experience for collectors and enthusiasts.

2. Learning Experience: Repairing a 30-year-old motherboard can be a rewarding learning experience, especially for those interested in computer history and electronics.

3. Potential Functionality: If the motherboard is in good condition, it could be used to restore an existing Macintosh system or even be integrated into a retro-computing project.

4. Availability: Vintage Apple Macintosh parts can be hard to find, but purchasing a pre-owned motherboard from a trusted seller can save time and effort in the search.

1. Compatibility Issues: The motherboard may not be compatible with modern operating systems or peripherals, limiting its usability.

2. Cost and Risk: Vintage motherboards can be expensive, and repairing them can involve a significant investment in time and resources. Additionally, there is always a risk of damaging the motherboard during the repair process.

3. Limited Resources: Finding documentation, tools, and replacement parts for a 30-year-old motherboard can be a challenge.

4. Potential for Data Loss: If the motherboard is being used to restore an existing system, there is a risk of data loss during the repair process.

In conclusion, purchasing an Apple Macintosh Logic Mother Board (Model Number: 820-0174) from 1985 for repair can be an exciting and rewarding experience for collectors and enthusiasts. However, it comes with its challenges, including compatibility issues, cost, and limited resources. Before making a decision, carefully consider your goals, resources, and the potential benefits and drawbacks of owning and repairing a vintage motherboard.

If you are interested in repairing a vintage Apple Macintosh system for historical or educational purposes, consider purchasing a pre-owned motherboard from a trusted seller as a starting point. However, if you are looking for a functional motherboard for modern use, it may be more practical to invest in a newer, compatible motherboard or consider alternative solutions.

Details:

This board does not work and needs repair. This is a logic / mother board for the first line of Macintosh computers, Plus.

part #: 8200174 prices

• $59.49-$100.00

specifications vintaelec:

• brand: Apple
• mpn: 820-0174
• model: Macintosh
• part type: Board
• country/region of manufacture: United States

seller vintaelec:

• # reviews: 4098
• rating: 99.4%
• city: New Milford, Connecticut

general vintaelec:

• condition: For parts or not working
• Consumer Electronics > Vintage Electronics > Other Vintage Electronics

shipping vintaelec:

• cost: $15.00
• class: Standard
• service: USPS Ground Advantage
• transit: 7-13 Days
• type: Fixed
• carrier: USPS

offer vintaelec:

• options: Ship-to-home
• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1
• started: September 2, 2025

returns vintaelec:

• policy: No Returns

payments vintaelec:

• wallet: Paypal
• credit card: Discover
• other

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