Hi , i got Haramn Kardan HS250 from My friend , the problem is fuse was blown, i replaced the fuse , now power is ok except amplifier voltage , i am not getting any out put from smps to amp section, any one can help me where i need to check to find the faulty , i attached here service manual.
-
-
Re: HARMAN KARDAN HS250 Fuse blown
Can you please upload good clear pictures for us to see so we can see what we are dealing with?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: HARMAN KARDAN HS250 Fuse blown
What you attached is the owners manual. start by downloading the service manual and check the parts in the pfc circuit, Q501, R506,507,510,512, then check Q509 & R572Comment
-
Re: HARMAN KARDAN HS250 Fuse blown
Sorry, it was my mistake, any way now i just found a trace blown near to big filter capacitor side on high voltage rail, that provide supply voltage to the smd ic after i join with a piece of wire power supply is ok..Originally posted by R_J View Post
But i dont know the exact reason to blow out that trace, i found that the yellow glue got very dark brown when i check its c conducting using multi-meter its shows some slightly conducting
Comment
Comment