VIVAX LCD TV-1931 no backlight

[rtstorm]

Hi, i got VIVAX LCD TV-1931 monitor/TV.
When it's start no backlight, it is working you can see under bright light that there is picture but no backlight. I try to replace 3 capacitor, but that did not help. The voltages on output to main board are 12V and On/Off= 4.7V

Here is the picture of power supply.

[smason]

Re: VIVAX LCD TV-1931 no backlight

Pictures of the bottom of the board will help. I suspect there are a few surface mount parts on the bottom including FETs and a fuse that we'll want to test.

[budm]

Re: VIVAX LCD TV-1931 no backlight

Yes, good closed up picture on the back side of the board and also four 1/4 section so we can easily see the copper traces. Thanks.

[rtstorm]

Re: VIVAX LCD TV-1931 no backlight

Ok. i found fuse on back of the PS. I replace it with wire (only for test) and it worked, now what fuse tipe and value can i use? Is this thermo fuse or regular fuse??

[budm]

Re: VIVAX LCD TV-1931 no backlight

"T" = 2.5A but I cannot tell the physical size (402, 603, 1206). May be one of these.

[rtstorm]

Re: VIVAX LCD TV-1931 no backlight

i replace it with standard SMD fuse, and all ok. Thank you