Hitachi 50UX26B

[[email protected]]

Hi there I just recieved a Hitachi Ultravision 50UX26B and after about
5 minutes it will shutdown and the red protection led will be on
inside, turning it back on keeps it on for about 30 sec more each
time. The 5 green leds inside are one strong while powered up and the
protection (red led) is softly on until the set powers down then its
bright and the green ones go out.

I can'nt see any blown caps or components and all fuses are good (even
the "litlfuse") but while powered on there is a buzz from around the
"protection" area on the circuit board (picture).

Picture looks GREAT when its on and audio is good to, so if its not to
bad of a fix (probably can do myself) I would really like to get it
working again so I dont have to go back to the 20" daewoo

Thanks for ANY help.

 

[[email protected]]

A tech, near my house, barely wanted to tell me it was in the power
circuit without coming over and charging a $125 trip fee and $225
troubleshoot fee....

Does ANYONE have any ideas? Thanks again for any advice

 

[Jim Land]

[email protected] wrote in @m58g2000cwm.googlegroups.com:

Hi there I just recieved a Hitachi Ultravision 50UX26B and after about
5 minutes it will shutdown and the red protection led will be on
inside, turning it back on keeps it on for about 30 sec more each
time. The 5 green leds inside are one strong while powered up and the
protection (red led) is softly on until the set powers down then its
bright and the green ones go out.

I can'nt see any blown caps or components and all fuses are good (even
the "litlfuse") but while powered on there is a buzz from around the
"protection" area on the circuit board (picture).

Picture looks GREAT when its on and audio is good to, so if its not to
bad of a fix (probably can do myself) I would really like to get it
working again so I dont have to go back to the 20" daewoo

Thanks for ANY help.

Start with the FAQ, which has great information:
http://www.repairfaq.org/sam/smpsfaq.htm

 

[Art]

Contact Hitachi, ask them for a quote for their service literature,
including the respective service bulletins.
Their costs may come close to the fees the technician quoted for you to
have it professionally checked out.

 

[b]

[email protected] ha escrito:

Hi there I just recieved a Hitachi Ultravision 50UX26B and after about
5 minutes it will shutdown and the red protection led will be on
inside, turning it back on keeps it on for about 30 sec more each
time. The 5 green leds inside are one strong while powered up and the
protection (red led) is softly on until the set powers down then its
bright and the green ones go out.

there could be aany number of things wrong here. that is why a tech is
needed!
Sounds like something is drawing slightly too much current or is out
of spec. I'd start by changing any caps on the b+ line (typically
rated 160v).

-B.