A Real Case: Swapping the TCEA and the Status Wouldn't Advance

In a case reported by a field engineer on a technical forum specializing in Mark V, a unit suffered a severe ground fault and, during recovery, every core reached A6 status except the TCEA, stuck at A5. The team swapped the suspect TCEA board — and the status stayed stuck at A5. As the investigation continued, it became clear the cause could be any of the following, not necessarily the board itself: Berg jumper position (which must exactly match the <X>, <Y>, or <Z> position of that processor), an incompatible PROM revision, TCPS fuses, corrosion on the flat-cable pins, or even the origin of the "new" board used in the repair attempt.

Where the DS200TCEAG1B Operates

Like the other TCEA boards, this one occupies the Mark V's <P> protective core, together with two other units forming the <X>, <Y>, and <Z> processors. Together, they monitor shaft speed, flame detection, and auto-synchronizing, feeding the unit's overspeed protection system.

Before Requesting a Replacement

• Record the position of every Berg jumper on the old board before removing it.
• Confirm the PROM revision expected by the I/O Configurator for that position on the <P> core.
• Check the TCPS fuses before blaming the TCEA.
• Document every diagnostic alarm present — they're rarely just noise, even when they look repetitive.

Questions about overspeed setpoints, trip logic, or test procedures are outside the scope of this page — always follow the GE manual for your revision and your plant's official procedure.

Reading the Part Number

DS200TCEAG1B is the base; DS200TCEAG1BTF is the full revision stamped on the label. Always provide the complete code when requesting a quote.

This Unit

Used, cleaned and tested, with a 1-year warranty.

What to Send With Your Quote

• Full part number with suffix, with a photo of the label
• Position (<X>, <Y>, or <Z>) and revisions of the other two boards
• Turbine model and Mark V Simplex or TMR
• Urgency

Request a quote through Request a Quote: response within 24 hours, worldwide DDP dispatch, purchase orders accepted.

• GE Speedtronic part number decoder
• GE Mark V DS200 collection