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Key Technical Specifications
- Part Number: DS200UDSAG1A
- Manufacturer: General Electric
- Series: EX2000 / Mark V
- Function: Display/keyboard interface board
- Display Type: Dot matrix display
- Display Layout: 2 rows x 40 characters
- Power Input: 24 V DC
- Connector Type: RJ-45
- Operating Temperature: 0 to 70 C
- Form Factor: Low-profile
- Country of Origin: United States
- Reference Manual: GEI-100197
Product Introduction
GE DS200UDSAG1A is a display/keyboard interface board used in GE EX2000 and Mark V excitation control systems. It handles operator interaction, local status display, and system communication in turbine and generator control applications.
This board is chosen when the existing HMI or interface section needs a direct replacement with the same form factor and wiring style. The 24 V DC input, RJ-45 interface, and compact low-profile design make it easy to match in field retrofits, but verify exact revision compatibility before installation.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Blank display on power-up | No 24 V DC supply, blown fuse, or upstream power issue | ❌ Low | Measure 24 V DC at the board input terminals with a multimeter | Check PSU, fuse, and cabinet wiring before replacing the board |
| Display lights up but no keypad response | Keypad ribbon fault, connector issue, or mis-seated harness | ✅ High | Inspect and reseat ribbon connectors; check continuity at the keypad harness | Replace only after confirming connector integrity and switch settings |
| Communication loss to the host system | Wrong cable, wrong network setup, or firmware mismatch | ✅ High | Verify RJ-45 cabling, link activity, and system diagnostics | Confirm revision match and communication parameters before swap |
| Intermittent operator input | Dirty connector, cracked solder joint, or ESD damage | ✅ Medium | Wiggle-test connectors while monitoring status; inspect for physical damage | Replace if the fault follows the board during bench testing |
| Display readable but missing characters | LCD/dot-matrix driver fault or local logic fault | ✅ Medium | Compare display behavior on a known-good unit | Replace if power and cabling are confirmed good |
| No boot or stuck startup state | Internal board fault or corrupted logic section | ✅ High | Check startup LEDs and diagnostic status in the control system | Usually points to board replacement if supply is stable |
If you get stuck, send technical support clear photos of the board, connectors, LEDs, and the system diagnostic log.
- DS200UDSAG1A
Frequently Asked Questions
Q: Is DS200UDSAG1A a direct replacement?
A: It usually is for the matching GE Mark V / EX2000 application, but you still need to verify revision, connector layout, and system firmware before installing it. I have seen close-looking boards fail because the site configuration was not copied exactly.
Q: Can I hot-swap this board?
A: No, do not assume hot-swap capability. Kill power first, because pulling a live board can damage the backplane or the replacement part.
Q: Why does this unit cost less than factory new?
A: This is typically sold as New Surplus, so the price is lower than an OEM factory-sealed unit. That usually means unused stock from excess inventory, not a rebuilt board.
Q: Will my existing settings or programming stay intact after replacement?
A: The board itself is an interface unit, so the bigger risk is not stored logic loss but mismatch in system configuration. Photograph DIP switches, jumper positions, and cable routing before removal.
Q: What is the most common install mistake?
A: Wrong connector seating and skipped revision checks. Take a photo before touching anything, then mirror the original physical setup exactly.
Q: How do I know the board is really bad?
A: First verify 24 V DC input, then check cabling, diagnostics, and the host controller. A lot of “bad boards” turn out to be power, wiring, or configuration problems.
Q: What condition do you sell this in?
A: This listing is treated as New Surplus unless otherwise stated. If you need factory-sealed or refurbished-tested stock, that should be confirmed before ordering.
