Hitachi Ultravision 60ux588 diagonal lines going up the screen
I have a Hitachi Ultravision 60UX588 that had not been used for several years. I attached a DVD and VCR to it, and it has sound, but the picture has diagonal lines moving up the screen constantly, like the old TVs where you'd have to reset the diagonal and horizontal settings. The picture that comes up with the menu is fine, but all inputs (I haven't tried S-VHS) have the same problem, whether it be the Coax inputs, or Video 1, 2, or 3. It works fine on another TV, so I know the other devices are fine.
Hard to tell but if the lines are colored it is one problem and if not another----sounds like maybe a comb filter problem.
A lot of these sets used surface mounted capacitors in the comb filter and with age they dry out----a real clue would be if the set is left on for several hours does the problem diminish or go away?Hard to tell but if the lines are colored it is one problem and if not another----sounds like maybe a comb filter problem.
A lot of these sets used surface mounted capacitors in the comb filter and with age they dry out----a real clue would be if the set is left on for several hours does the problem diminish or go away?
AnonymousNov 22, 2011
Thanks for your response.
I left the TV on for several hours, and the problem remained. The TV just keeps scrolling up. There are colors on the screen, for sure, and it does look like it responds to the input from the DVD, for example, although it's not detectable.
I opened up the TV to see if any of the caps popped, but they all look pretty good. Is there a way I can detect if the caps dried out?Thanks for your response.
I left the TV on for several hours, and the problem remained. The TV just keeps scrolling up. There are colors on the screen, for sure, and it does look like it responds to the input from the DVD, for example, although it's not detectable.
I opened up the TV to see if any of the caps popped, but they all look pretty good. Is there a way I can detect if the caps dried out?
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Yes, it is. I made the mistake of putting it down as 60ux588, but it's actually 60ux58B.Yes, it is. I made the mistake of putting it down as 60ux588, but it's actually 60ux58B.
I have a archive of Hitachi service manuals somewhere but if I remember this one, the 3 comb filter board is in a metal box just towards the left (as seen from rear) of the middle of the chassis.
The caps are tiny surface mounted ones and need to be tested with a cap checker.I have a archive of Hitachi service manuals somewhere but if I remember this one, the 3 comb filter board is in a metal box just towards the left (as seen from rear) of the middle of the chassis.
The caps are tiny surface mounted ones and need to be tested with a cap checker.
AnonymousNov 23, 2011
Thanks for your response.
I guess it's time to get a Cap Analyzer. Would you recommend the Capanalyzer 88a Series II from Electronic Design Specialists? If not, which is a good choice?Thanks for your response.
I guess it's time to get a Cap Analyzer. Would you recommend the Capanalyzer 88a Series II from Electronic Design Specialists? If not, which is a good choice?
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If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.
Its main power regulator board has damaged. It will be best repalce this as card basis. Actually replacing it is a semi-skilled work. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
I hate to tell you this but what is called a filter 'Analyzer or Polarizer that is positioned before the Blue's LCD panel is going bad or has a great amount of dust build up on it. A Good TV Service with experience on these types of LCD TV's should be able to tell you what the cost of repair is. Blessing, A/V Media Guy
Good Day, LDS also; You may have a poor seated cable connector. Unplug TV from A/C, remove back look for a large black connector. It connects between the Main Digital Module and the Drive PWB. Re-insert both ends several times to make better contact, use contact cleaner if have but not always needed. Good Luck, big IRISH.
Could be a loose connection on the printed circuit board in the Vertical deflection circuit.
You would have to have a qualified technician to repair this problem.
A intermittent connection in the circuit described can cause a horizonal line across the screen.
You have to be careful and not leave the TV on for a period of time with a bright line, as it can actually burn a line on the CRT screens, which is permanent.
Mine has the same thing when I have a Component AV S-Video Switch (one that can have muit- rca connections along with coax TV line on it ) the component switch caused interference and caused that line
Hard to tell but if the lines are colored it is one problem and if not another----sounds like maybe a comb filter problem.
A lot of these sets used surface mounted capacitors in the comb filter and with age they dry out----a real clue would be if the set is left on for several hours does the problem diminish or go away?
Thanks for your response.
I left the TV on for several hours, and the problem remained. The TV just keeps scrolling up. There are colors on the screen, for sure, and it does look like it responds to the input from the DVD, for example, although it's not detectable.
I opened up the TV to see if any of the caps popped, but they all look pretty good. Is there a way I can detect if the caps dried out?
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