Original Radio Shack / Tandy TRS-80 Model III motherboard (main logic / CPU board), Revision F (“Frank”), fully populated to 48K RAM.
CONDITION: Used — Excellent / cleanBoard is clean. Sold as a tested-working mainboard, NOT parts/AS-IS.
MEMORY / CAPACITY• Fully populated 48K: three banks of 4116 DRAM (24 chips total — 8 = 16K, 16 = 32K, 24 = 48K).• Bench-tested in a real Model III with memory test software. During testing the board completed 50 consecutive passes. Listing photos include memory-test and 48K confirmation screenshots.
WHAT YOU GET• One original Model III motherboard, Rev F• Fully populated 48K RAM configuration as tested• Board only — no case, keyboard, PSU, CRT, drives, or cables
PHOTOS• Memory test passing (screenshot)• 48K confirmation (screenshot)• Close-ups of the board (components, connectors, overall)
NOTESThis is the main logic board for a Model III. Buyer should be comfortable installing a vintage PCB (ESD care, correct connectors, known-good PSU/CRT/keyboard in the host machine).
SHIPPING & RETURNSBuyer pays shipping. 30-day money-back return; buyer pays return shipping.
Ask questions before purchase--happy to answer any questions.