The CAT 201‑7943 is a Display GP‑E panel used on Caterpillar hydraulic and engine control units. Common failures include loss of visual output (no light or flicker), dead pixel clusters, and intermittent power due to a loose or corroded connector or damaged flex cable. The display may also fail if the associated controller’s LED driver IC overheats or if the supplied voltage falls below the required 12 VDC range. First‑check diagnostics: verify that the panel receives correct supply voltage with a multimeter, inspect all ribbon and plug connections for damage or corrosion, and review any diagnostic codes from the host controller that reference display or power‑related faults.[oss-gpt-20b]