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Hitachi CPT-2177SF TV no image without fault repair method of sound
Time£º2014-07-30 09:02:37  Source£ºNetwork  Author£ºUnknown  Clicks£º1221
  

Measuring the machine into the component U001 (21) feet have all TV signal output waveform, the video signals (21) foot to AV switch board M1301 at 6 feet, CPU IC1101 (H343000) (36 feet) high and low level, and to control switch of M1301 (5 feet, video signal output from M1301 attending foot to decode circuit. ZHdservice manual download site
 ZHdservice manual download site
Press TV/VIDEO, and measured the CPU (36) feet high and low level of change, but no low level changes the M1301 5 feet. As failure is ZD1105 diode open, after the replacement troubleshooting.ZHdservice manual download site
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