hey guys, working on my vizio 37. Im new to this forum and pretty new to fixing TV's so forgive my lack of knowledge in some places. but been deep in electronics for a while. after hours and hours of testing and reading about vizio black screen im stuck and need a hand.
: power supply 0500-0507-0250
here is what I know
vw37lhdtv10a
Vizio logo on bottom lights up orange and stays orange, power button does nothing, I do not see backlight coming on, I do not see pixels on screen with flashlight.
all fuses test good. 1 on power supply- 2 on main board- 5 on (tcon?)
5v at f2 on main
0v at f1 on main
pson has.1v on standby 0v when i push power button.
at j1 i have 5.16v on 9,10,11
.01v on pin 1
.01v on pin 13
no burnt spots anywhere on board
i see no popped caps whatsoever
2 caps are questionable on power board c240a and c240b near j22
plugs to button board seem fine all connections are good.
u7 i believe is giving a funny reading thats
leg1 .1v
leg2 .68v
leg3 3.24v
amc1117 fo713j
all other regulators check out good from what i know
no sound coming from coils
the service manual mentions (step 2) troubleshooting
is it in powersaving mode
check video cable?
is timing supported?
check sync input?
dont know how to check this
can someone help me wake this thing up ? ill get a pic up as soon as i can
thanks
: power supply 0500-0507-0250
here is what I know
vw37lhdtv10a
Vizio logo on bottom lights up orange and stays orange, power button does nothing, I do not see backlight coming on, I do not see pixels on screen with flashlight.
all fuses test good. 1 on power supply- 2 on main board- 5 on (tcon?)
5v at f2 on main
0v at f1 on main
pson has.1v on standby 0v when i push power button.
at j1 i have 5.16v on 9,10,11
.01v on pin 1
.01v on pin 13
no burnt spots anywhere on board
i see no popped caps whatsoever
2 caps are questionable on power board c240a and c240b near j22
plugs to button board seem fine all connections are good.
u7 i believe is giving a funny reading thats
leg1 .1v
leg2 .68v
leg3 3.24v
amc1117 fo713j
all other regulators check out good from what i know
no sound coming from coils
the service manual mentions (step 2) troubleshooting
is it in powersaving mode
check video cable?
is timing supported?
check sync input?
dont know how to check this
can someone help me wake this thing up ? ill get a pic up as soon as i can
thanks
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