Service manuals, schematics, eproms for electrical technicians

SONY KV-27XBR26

TV - SERVICE MANUAL
Type: (PDF)
Size
1.6 MB
Page
36
Category
TV
SERVICE MANUAL
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  • Also known:
    SONY KV27XBR26 KV 27 XBR 26 27XBR26 KV-27XBR26
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Relevant TV forum topics:
Sony KDL-46EX728 LED panel partly not working
Hello friends,

my SONY TV shows some missing LEDs I think:




After dissabling and measuring: The first and the last two transistors show 1,6 Volts. The second one shows 0 Volts:



Any ideas?
Sony KDL-40W4500
Sziasztok! Sony KDL-40W4500 TV-hez keresek Service Manualt. Előre is köszönök minden segítséget!
Sencor SLE3210M4 led háttér alacsony feszültség
Üdv!

Fenti készülék bekapcsol, de a led háttér világítása nem megy. A két csík teszterrel egyenként mérve 55V-on szépen működik. A táp felől viszont csak 64V-ot kap (ennyi a max bejövő is, a FET és a source kör rendben) és mivel soba vannak kötve ez nagyon kevés. Ha a csíkokat egyenként kötöm be, működnek, nem tilt le a védelem.
Hol lehet a hiba? 
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