Question about Hitachi 50SBX70B 50" Rear Projection Television

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Please help need to watch tv

My tv is a 50SBX70B 50 in. Rear Projection and the lights k427 and k435 does not light up so what could be problem....it made some noise before it turn off......it use to do it but now it does not turn on ...red light upfront just fade away when i try to turn it on........with picture..please

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  • 4,402 Answers

Well this gives you someplace to start!
Symptom: NO POWER
Cause: DEFECTIVE I912
Symptom: SHUTDOWN
Cause: Q777,I901
Symptom: SHUTDOWN
Cause: E994,D724
Symptom: SHUTDOWN
Cause: DEFECTIVE I401
Symptom: SHUTDOWN
Cause: DEFECTIVE I601
Symptom: SHUTDOWN
Cause: DEFECTIVE C715
Symptom: SHUTDOWN/OPEN E995,E996
Cause: DEFECTIVE T702

Posted on Jan 29, 2008

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ctf1800
  • 4402 Answers

SOURCE: 50SBX70B 50 in. Rear Projection

Double post.

Posted on Jan 29, 2008

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Need help


If the green lites on bord lites up doesnt mean it is ok. If you check on that board in the middle at the back of the heatsink in the middle, there is two lights, green lights that is not lighting up. If i am wright. You have caps an a transistor on your powersup that is shorted. Take to somebody to fix powersupply.

Jan 24, 2008 | Hitachi 50SBX70B 50" Rear Projection...

1 Answer

My 50SBX70B flicks than lost the power


Symptom: NO HOR SYNC
Cause: DEFECTIVE I008
Symptom: No Horizontal Sync. When PinP is called up, main picture may lock up for a 8 moment, then it goes back out of sync.
Cause: I008 defective (Sync Switch)

Jan 15, 2008 | Hitachi 50SBX70B 50" Rear Projection...

1 Answer

Tv help


Symptom: PICTURE PULLS
Cause: DEFECTIVE D702,D703,D704
Symptom: DIGITAL CONVERGENCE WON'T ADJUST
Cause: DEFECTIVE DCU

Jan 14, 2008 | Hitachi 50SBX70B 50" Rear Projection...

1 Answer

I have a hitachi 50sbx70b


sounds like either a tube is arcing or h.o.t is arcing.

Nov 12, 2007 | Hitachi 50SBX70B 50" Rear Projection...

3 Answers

My 50SBX70B doesn't start


There are many reasons for a no start on your 50SBX70. I will give you the most common problem I have found. Check E994( 4a pico fuse on the 120v line in pwr supply) If it is bad, remove C701(.001/2kv) from the circuit located near Q777. Inspect the capacitor for any burn marks, if so put in a new fuse and leave the cap out and fire up the set.

Nov 07, 2007 | Hitachi 50SBX70B 50" Rear Projection...

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