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GeckoAddict
Joined: 31 May 2011
Posts: 3
Location: Milwaukee, WI
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 Posted: Tue May 31, 2011 12:40 pm Post subject: Hitachi 57S700 green/purple flashing - Menu shows fine |
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Model: Hitachi 57S700 (rear projection CRT)
It is randomly jumping to a flashing green and purple screen after working for a few minutes. It happens to all the inputs (HDMI, Component, standard analog video, antenna). Sometimes its flips to a pattern of green as well. While doing this, the on screen menu and magic focus work and display perfectly. Here's two videos that show two of the three ways it's been failing (in the second video, the purple is actually pretty dark and it's consistent across the screen, it's just the bad iPhone video camera that makes it look like it's brighter in the center):
http://www.youtube.com/watch?v=a2wi5si5JEA
http://www.youtube.com/watch?v=m4dBwC2vBj4
The TV will occasionally work for the first 30 seconds to 20 minutes before flipping to this mode and I have seen it once correct itself for a few minutes. I figure something is loose or a solder joint has gone bad but I'm not sure where to start looking on this TV. I wouldn't even mind swapping a whole board if someone can point me to a part number that will for sure fix this. Thanks for any help! |
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slinteriors
Joined: 05 Apr 2009
Posts: 32
Location: North Carolina
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| Posted: Wed Jun 01, 2011 9:43 am Post subject: |
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Heres something to check
Symptom: Flashing different colors, R, G, B.
Cause: Check for cold solder connection on Crystal XY06 off pin 10 of IC IY04, Terminal pwb. |
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GeckoAddict
Joined: 31 May 2011
Posts: 3
Location: Milwaukee, WI
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| Posted: Thu Jun 02, 2011 9:28 am Post subject: |
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| I'll take a look when I get home tonight. Thanks! |
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slinteriors
Joined: 05 Apr 2009
Posts: 32
Location: North Carolina
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| Posted: Thu Jun 02, 2011 10:09 am Post subject: |
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| Your welcome let me know if you need further assistance or need any service info for your model. |
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GeckoAddict
Joined: 31 May 2011
Posts: 3
Location: Milwaukee, WI
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| Posted: Fri Jun 03, 2011 7:57 pm Post subject: |
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That completely worked! The solder on that pin was loose and lifting off the board a touch (it was really hard to see, but you could see the ring on the solder joint around the pin). The hardest part was getting the input board off the main (those clips are hard to reach).
Thanks for your help! |
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slinteriors
Joined: 05 Apr 2009
Posts: 32
Location: North Carolina
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| Posted: Sat Jun 04, 2011 5:42 am Post subject: |
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| Glad I could assist with the problem congratulations on a job well done. |
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