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| Electronics Get help with your electronics, including flux capacitors. |
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#1 (permalink) |
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Registered User
Join Date: Jul 2009
Posts: 25
OS: vista
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Toshiba Cinema Series HD 57HDX82 HELP!!
Toshiba Cinema Series HD 57HDX82 decided not to work. It turns on and has sound but the picture is scrambled however you can see the menu when you try to adjust things just fine. I pulled the front cover off and all of the bulbs are lit, when you turn any of the six adjustment knobs behind the panel you can see the color and contrast change but there is no visible picture at all just colors. Any ideas where to start looking for trouble? I have no experience at all working on TVs but have a good understanding of most electronics. Thanks in advance for any help.
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#2 (permalink) |
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Mentor Home Support, Gearhead Automotive Center
Join Date: May 2009
Posts: 560
OS: WINXP
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Hi SlammedSdyme01
Take extreme caution when working with t.V's, they contain high voltage circuits that can cause serious injury or death. The problem is coming from bad capacitors. Replace all 16v 10 microfarad capacitors. CX261 CX230 CX270 CZ52 CX178 CX221 C514 CX250 CX670 CX241 CX541[/b] Last edited by octaneman; 10-12-2009 at 08:10 AM. |
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#3 (permalink) |
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Manager Home Support, Assistant Manager Articles Team
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
__________________
. Lest we forget... "They shall grow not old, as we that are left grow old; Age shall not weary them, nor the years condemn. At the going down of the sun and in the morning We will remember them." |
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#5 (permalink) |
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Manager, Networking Forums
Join Date: Sep 2002
Location: S.E. Pennsylvania, US
Posts: 41,874
OS: Windows 7, XP-Pro, Vista, Linux
Blog Entries: 1
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
While capacitors are a frequent failure item, what makes you think they're bad in a set this new? There could be many causes for the problems, not just faulty capacitors.
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#6 (permalink) |
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Mentor Home Support, Gearhead Automotive Center
Join Date: May 2009
Posts: 560
OS: WINXP
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Here is a link detailing the board: http://www.dshosu.com/how-to-fix-tos...tv-wavy-lines/
Last edited by octaneman; 10-12-2009 at 03:49 PM. |
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#7 (permalink) |
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Manager, Networking Forums
Join Date: Sep 2002
Location: S.E. Pennsylvania, US
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Well, I didn't see a lot of success stories, but there seems to be some basis to believe this. I suppose this could be like the motherboards from a few years back that had defective capacitors, I actually had several of these. I also had variable results, one I repaired and it worked fine after that, the other was dead and stayed that way after the repair.
The difference here was the caps were visibly leaking, so there was no doubt they were bad.
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#8 (permalink) | |
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Registered User
Join Date: Jul 2009
Posts: 25
OS: vista
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Quote:
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#9 (permalink) |
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Manager, Networking Forums
Join Date: Sep 2002
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
His link worked for me fine, here it is again: http://www.dshosu.com/how-to-fix-tos...tv-wavy-lines/
Here's a sample of the page I get from that link:
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#10 (permalink) | |
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Mentor Home Support, Gearhead Automotive Center
Join Date: May 2009
Posts: 560
OS: WINXP
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Quote:
Yes, there's a picture detailing their position on the PCB in the link posted. |
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#11 (permalink) |
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Manager, Networking Forums
Join Date: Sep 2002
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Not sure why the link doesn't work for him...
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#12 (permalink) |
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Mentor Home Support, Gearhead Automotive Center
Join Date: May 2009
Posts: 560
OS: WINXP
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Got a better chance of winning the powerball lottery than to figure that one out..
Last edited by octaneman; 10-13-2009 at 07:15 AM. |
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#13 (permalink) |
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Moderator Hardware Team
Join Date: Oct 2006
Location: Brit living in Greece
Posts: 7,531
OS: WinME, WinXP Pro SP3, Win7 Beta, Ubuntu 9.04 & Netbook Remix & CD2USB, Mepis 6.5, Fedora 10
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Capacitors are still a major source of problems in a lot of electronic equipment .. sometimes they are visibly noticeable .. others it's a question of replace and see .. basically eliminate the possibility before looking for anything else when nothing is obviously wrong .. I frequently use an ESR meter to measure capacitors in conjunction with an LCR meter .. but the LCR meter can only go to 200uF.
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#14 (permalink) |
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Manager Home Support, Assistant Manager Articles Team
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Side note: I think I must have been extremely lucky - in all the years of being a Radio Ham since the '60s and more than a decade of running a commercial two way radio supply & service centre and 13 community repeater networks, I can only remember only one capacitor blowing its top (literally a mini Chernoble inside the case).
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. Lest we forget... "They shall grow not old, as we that are left grow old; Age shall not weary them, nor the years condemn. At the going down of the sun and in the morning We will remember them." Last edited by DonaldG; 10-14-2009 at 02:08 AM. |
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#15 (permalink) |
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Manager, Networking Forums
Join Date: Sep 2002
Location: S.E. Pennsylvania, US
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
I've seen a number of them. Of course, many of them were Tantalum caps that were installed backwards, they make nice firecrackers!
![]() Remember, a few years back, there was a huge run of bad caps from a far east outfit that stole the formula and was trying to make cheap caps. They didn't have the entire process, so they only lasted a year or two before they would leak and die.
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#17 (permalink) |
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Manager, Networking Forums
Join Date: Sep 2002
Location: S.E. Pennsylvania, US
Posts: 41,874
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
What values and styles are you looking for. There are tons of places that sell caps.
DigiKey, Mouser Electronics, Allied Electonics, etc.
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#18 (permalink) |
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Manager Home Support, Assistant Manager Articles Team
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Radio Shack
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. Lest we forget... "They shall grow not old, as we that are left grow old; Age shall not weary them, nor the years condemn. At the going down of the sun and in the morning We will remember them." |
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#19 (permalink) |
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Manager, Networking Forums
Join Date: Sep 2002
Location: S.E. Pennsylvania, US
Posts: 41,874
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Blog Entries: 1
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
I'm not sure Radio Shack has much in the way of such caps anymore, at least the ones around here don't.
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#20 (permalink) |
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Moderator Hardware Team
Join Date: Oct 2006
Location: Brit living in Greece
Posts: 7,531
OS: WinME, WinXP Pro SP3, Win7 Beta, Ubuntu 9.04 & Netbook Remix & CD2USB, Mepis 6.5, Fedora 10
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Re: Toshiba Cinema Series HD 57HDX82 HELP!!
Don't just buy any capacitors buy 105 degree C and if you can find LOW ESR even better. They'll last longer.
Place 85 degree C caps in your set and you'll be replacing them again soon! Buy good capacitors from a reputable dealer.
__________________
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