FP1783A Industrial HMI Touch Screen Panel: Advanced Automation Control Solution
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What is the FUTABA FP1783A power supply?
The FP1783A is Futaba's open-frame switching power supply — a 12.3 V, 9.17 A unit in a U-shaped aluminium chassis, universal-input from 100 to 240 V AC. The side label reads it plainly: MODEL NO. FP1783A, INPUT :100V-240V ~ 2.4-1.6A, 50/60Hz, OUTPUT :12.3V — 9.17A / 100V-240V 1.0A 50/60Hz, with the FUTABA name and the RU mark; the board silk carries FP1783A and MADE IN JAPAN. This listing's original title called it an HMI touch panel; the photographed hardware corrects that — it is a power supply. One unit, tested pull at 80% condition with a warranty as recorded across its two intakes on 8 December 2025 (one booking one month, one three months — both stated). All eighteen photos and the two inspection videos show this exact unit.
Part details
| Field | Value |
|---|---|
| Brand | FUTABA — MADE IN JAPAN (board silk) |
| Model | FP1783A open-frame switching power supply |
| Input | 100–240 V AC, 2.4–1.6 A, 50/60 Hz (universal input) |
| Output | 12.3 V DC, 9.17 A — about 113 W (label line 2: 100V-240V 1.0A 50/60Hz, printed as marked) |
| Construction | Aluminium U-chassis, single green PCB: 178A11 SBAC main transformer, 1783A/1783A3 aux transformers, five TDK 1.0 µF X2 film capacitors, HR28-502 chokes, toroidal common-mode coil, FET heatsink bank |
| Board ID | FP1783A, P1783A; FAIRCHILD PWM IC; CN1/CN2/CN3 headers and VOUT terminals |
| Approvals | RU mark on the label; SS-01L style marking below the logo |
| Condition | Tested pull, 80% condition; intake bookings of 8 December 2025 (1-month and 3-month warranties as recorded) |
Values are read from the side label and the photographed construction in the photo set.
Where this supply belongs
A single-rail 12.3 V / 9 A open-frame supply is the classic backend for a display-driven machine — the rail that feeds a backlight chain, a controller board and its fans from one source. Futaba built the FP1783A for exactly that duty, and the construction shows it: the universal input means one part covers 100 V and 230 V plants, the X2 film caps and the two-stage choke keep the conducted noise inside limits, and the main transformer plus the FET bank on their heatsink carry the hundred-watt load continuously. The aux transformers run the standby and bias rails that let the host logic come up before the main output settles — the sequencing a display system needs to avoid a garbage first frame.
The unit in this record is a tested pull photographed from every side: label legible, heatsink fins straight, board silk and component codes all original. For a machine whose FP1783A has failed — and whose alternatives are a full display assembly — this is the board-level fix at a fraction of the cost: verify the rail voltage against the dead unit, land the four wires, and the machine is back.
Photos
All images below are original KOEED warehouse photos. Click any photo to view it full size.
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