3 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
TCL 65C805 HDMI/eARC signal loss persists after main board replacement
A Spanish owner's formal complaint to the OCU consumer association: a 65C805 bought July 2024 lost HDMI/eARC signal; the official TCL service replaced the main board in October 2025, but the defect persisted identically. The service technician reportedly warned the set was irreparable if the board swap did not fix it, and the owner is seeking a declaration of irreparability for a refund.
What to check. If HDMI/eARC drops out on a C805, a main-board replacement may not fix it; the defect can persist after official repair. Buyers should verify HDMI/eARC function early in the warranty period and be prepared for a repair that may not resolve the issue.
TCL 75C805 panel failure: vertical stripe and flickering after two months
A Ukrainian buyer of a 75C805 reports the TV broke after two months — a stripe down the middle of the screen and flickering — and it spent three weeks in service. Another review on the same page reports a vertical stripe appearing on the right side of the screen in dark tones after 8 months of use. A third notes stuck pixels as a defect risk.
What to check. Panel failures (vertical stripes, flickering, stuck pixels) have been reported on C805 units within months of purchase. Buyers should check for panel defects early and be aware that a panel failure may mean a lengthy service visit.
TCL C805 bricked by failed USB firmware update (V8-T653T01-LF1V486.002129)
A Spanish owner reports a USB firmware update (V8-T653T01-LF1V486.002129) hung mid-process; after powering off, the TV never booted again — no LED, no USB activity, no network port activity. The user is seeking a recovery image (update.img) to attempt a hard reset, indicating the set is effectively bricked by the failed update.
What to check. A failed USB firmware update can permanently brick a C805 with no visible sign of life. Owners should not power off during an update, and should treat USB firmware flashing as risky; recovery may require a hard-reset image that is not readily available.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko Televisions catalog, version 0.1.1, under the CC-BY-SA-4.0 license.
