The user sent a Hisense LCD TV TLM3233N (7.820.996A motherboard), which stated that the TV had to be powered on many times before it could be turned on. The Mining Transformer,Mining Transformer,Electric Power Transformer,Electric Transformer SANON DOTRANSÂ Co., Ltd. , https://www.sntctransformer.com
I personally tested it myself. Disassemble the detection power supply 5V normal other groups have no voltage output, and then test the cable STB switch machine control terminal is low to indicate that the motherboard is in standby state. Focus on the motherboard test --5V, 3.3V, 1.8V are all normal. Maintenance is in trouble Taobao search motherboard 50RMB is cheap! But the customer is anxious to use it to say that we can do the maintenance and change the board how can we reflect the skills of our maintenance personnel? ! Deciding to take a look at other overhauls will save you from going straight to the subject! Test reset transistor Q7 C pole boot instant 0V (always 0V) b / e pole 3v or so prove no reset. The effect of substituting the capacitor CA14 is immediately eliminated.
Hisense TLM3233H (996A board) LCD color TV circuit schematic.rar