how to fix 2 blinks of klv 40v400a
The Sony LED model KLV-40W400A was brought in for repair due to a two blink error indicating a power supply issue. After checking the power supply, which was functioning correctly with accurate voltages, it was found that the twelve-volt supply was not reaching the main board due to a faulty safety resistance reading zero ohms. Replacing this resistance resolved the issue, and the television began to operate normally.
Cause of the fault :
Zero ohm resistance faulty:
Shaukat Ali has over 30 years of experience in LED TV repair, specializing in chip-level repair work. He is an expert in Sony LED TVs, and also repairs other major brands like Samsung, TCL, Orient, and Haier. His expertise includes display panel faults, motherboard issues, power supply circuits, T-Con, and HDMI faults. Based in Lahore, he shares real-time fault finding cases from daily repair work to help technicians and learners with practical experience.
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