RGB Mesin TV W-COM

RGB Mesin TV W-COM

RGB mesin tv W-com, cara cek kondisi tabung normal/tidak :

1. Lepas/cabut salah satu kaki :
- R936 2K7 KR/katoda RED/merah
- R926 2K7 KG/katoda green/hijau
- R916 2K7 KB/katoda blue/biru
Pasang ujung probe hitam ke input
tuner, tv ON ukur/tempelkan ujung probe merah kekaki socket tabung KR,KG,KB, normal terukur 80-130VDC, jika screen dinaikan tegangan KR,KG,KB di socket tabung ikut naik, begitu sebaliknya jika screen flyback diturunkan, semua harus seimbang, jika didapati ada yg drop dibawah 80VDC, lakukan restorer/cas tabung, cari skema restorer gun di mbah google

Kerusakan warna yg disebabkan TR
RGB V911,V921,V931 jika :
Terlihat cuma warna hijau cek transistor V911,V931 C2482
Terlihat warna merah dan biru cek
transistor V921 C2482
Terlihat warna hijau, merah, kun
ing, cek transistor V931 C2482
Kadang juga disebabkan induksi
antar kaki E,C,B di salah satu
transistor RGB V911,V921,V931 ditandai bagian bawah kaki transistor PCBnya hitam/gosong, cara mengatasinya kerik PCB antara kaki E,C,B kadang2 normal kadang2 kebiruan/kehijaun ganti transistor V921,V931

Logo tulisan di tv normal, OSD
blooming/mblobor cek/ganti
transistor C1815,A1015 PCB RGB
Jika R915,R925,R935 12K/2watt naik hambatannya salah satu timbul kerusakan :
Garis2 buku warna biru R915 12K KB naik hambatannya/bisa juga dari KB short ke heater /G1/GND

Garis2 buku warna hijau R925 12K
KG naik hambatannya/bisa juga dari KG short ke heater/G1/GND

Garis2 buku warna merah R935 12K KR naik hambatannya/bisa juga dari KR short ke heater/G1 GND.

Ini posisi Transistor KR/katoda RED/ merah. 

Transistor C1815 jika bocor dispay blooming/mblobor/timbul garis2/ blanking. 

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