A Safety Note Before You Handle the Old Board

Before pulling a failed DS3800HLEA from the rack, it's worth remembering that the capacitors on GE Speedtronic boards of this era can retain a high-voltage charge briefly even after the panel's power has been removed. Follow your site's lockout/tagout and board-handling procedures when removing the old card, and treat any pulled board as potentially live until you've confirmed otherwise. With that out of the way, here's what this board is and how to make sure you're ordering the right replacement.

What the DS3800HLEA Logic Element Board Does

In a GE Speedtronic Mark IV panel, the DS3800HLEA processes discrete logic signals — taking inputs from sensors and other control devices and performing the logical operations that drive the system's decision-making. It's built around 10 status LEDs viewable from the front (which briefly self-test at power-up), 3 configuration jumpers, and a transistor-to-transistor logic (TTL) device handling the interface between its integrated circuits, with air dividers directing airflow over the components for cooling. A modular connector and retention levers let it be inserted or removed from the rack cleanly. This DS3800HLEA1C1C is a used board, cleaned and tested, with a 1-year warranty.

Rule These Out Before Ordering a Replacement

• Field contacts and relay wiring feeding the logic side of the rack — a stuck or corroded contact can look exactly like a card-level fault.
• The DS3800HLIA or HLIC logic input boards, which condition signals before the element board processes them. A fault here is easy to mistake for an HLEA problem, even though it's a different physical card.
• Jumper configuration — confirm the 3 jumpers on the board being replaced are set per your system documentation; a jumper left in the wrong position after a previous swap can present as a hardware failure.
• The specific <R>, <S>, or <T> channel flagging the fault — Mark IV's two-out-of-three voting means a single-channel issue may not trip the unit, so identify the channel before deciding which card to pull.

Once wiring, the input boards, and jumper settings check out, and the fault still isolates to this card, ordering a replacement HLEA makes sense.

What "1C1C" Identifies

DS3800 names the board family, HLEA names the logic element function, and 1C1C identifies the production run and revision — run "C," revision "C." You'll also see 1C1B elsewhere in this line; the shared "1C" suggests the same production run, with "C" marking a later revision letter than "B" within it. GE didn't publish a public account of what changed at each letter, so treat the full suffix as a required match to your existing board rather than a rounding detail. Our GE Speedtronic Part Number Decoder explains this numbering approach in more depth.

The Rest of the Logic Lineup

The logic input boards (DS3800HLIA, DS3800HLIC) and the DS3800HLNE network/highway controller are the boards most directly tied to the HLEA's function within the rack. Our GE Mark IV DS3800 Boards collection covers the wider DS3800 family for cross-reference.

Quote Request Checklist

• The full part number and suffix as printed on the label
• A photo of the label if there's any doubt about a character
• Turbine model and confirmation of Mark IV Speedtronic
• Quantity and urgency

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General Information about the Product
Part Number	DS3800HLEA1C1C Mark IV DS3800
Description	GE General Electric DS3800HLEA1C1C DS3800HLEA Logic Element Board Mark IV
Condition	used Cleaned and Tested. With 1 Year Warranty.