Customer question: What information is needed to arrange remote assistance or an on-site repair?
English explanation
A good service process starts with a case number and a short evidence package. Provide the customer/site name, screen zone, model, symptom, affected scope, date/time, recent changes, controller and software version, power status, full-screen photo, close-up video, processor screenshot and current configuration backup. For an overseas reseller, identify both the reseller contact and the end-customer site. Remote support normally checks the source, processor, signal chain, receiving-card parameters, cabinet internals and hardware in layers. The engineer states what is confirmed, what is likely and what requires customer, site or manufacturer confirmation. The customer should not open a cabinet, disconnect internal cables, alter grounding or perform live electrical work unless qualified personnel have isolated and verified power. If remote support cannot close the issue, the case should define the next step: available time slots and time zone, site personnel, tools, spare parts, access, safety conditions and escalation contact. On-site service may include inspection, repair, configuration recovery, testing and a report, but its scope and travel/parts terms must be confirmed in advance.
Service boundary
Response time, warranty, travel, spare parts and final responsibility follow the confirmed service agreement. Initial technical guidance is not an acceptance of liability or a guaranteed replacement promise. — ## Closing note For a reliable used-LED project, treat purchasing, installation, commissioning, operation, inspection and after-sales as one traceable process. Keep model evidence, configuration backups, cabinet maps, test records and service tickets together. When a fact is not confirmed, label it clearly and request the missing evidence before making a promise.
