Dimplex Revillusion electric inserts and log sets are used to create fireplace ambiance with optional heat, commonly chosen for remodels where venting gas isn't feasible. Repairs are usually economical when they involve replaceable electronics like a remote receiver, control board, or flame effect components, provided parts are available and the housing is intact.
Replacement becomes more attractive if the heater element fails and the unit has other issues (flickering LEDs, noisy motor), because labor to disassemble and reassemble built-in surrounds can be significant. Use the threshold as a practical cap: if repair costs approach the price of a new insert with warranty, replacement often reduces hassle.
Also consider how you use it-if you rely on it for space heat, prioritize safe operation and thermal cutoff performance. If it's mostly decorative, minor issues might not justify major repair spending.