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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Video Monitor Help
I volunteer at a small museum that has a bank of Panasonic WV-5490 CCTV
monitors. One of them now blows the unreg dc fuse. Isolating different sections, I traced the problem to a low resistance reading in the horiz osc/hv section, whose operation has always been a bit of a mystery to me. I have limited eqpt at my site workbench, a Fluke multimeter. I could use a schematic to help me trace the problem further. Google only found tech manuals for $20, which they can't spare, and being the pix quality was only marginally good, probably needs a new tube eventually too. Any help would be appreciated. PS: They dont throw anything out. Thanks, Rick |
#2
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Video Monitor Help?
Gosh, no helping hand at all?
The museum is the Battleship New Jersey. -- -bye, Rick . .. I volunteer at a small museum that has a bank of Panasonic WV-5490 CCTV monitors. One of them now blows the unreg dc fuse. Isolating different sections, I traced the problem to a low resistance reading in the horiz osc/hv section, whose operation has always been a bit of a mystery to me. I have limited eqpt at my site workbench, a Fluke multimeter. I could use a schematic to help me trace the problem further. Google only found tech manuals for $20, which they can't spare, and being the pix quality was only marginally good, probably needs a new tube eventually too. Any help would be appreciated. PS: They dont throw anything out. Thanks, Rick |
#3
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Video Monitor Help?
Rick wrote:
Gosh, no helping hand at all? The museum is the Battleship New Jersey. -- -bye, Rick . .. I volunteer at a small museum that has a bank of Panasonic WV-5490 CCTV monitors. One of them now blows the unreg dc fuse. Isolating different sections, I traced the problem to a low resistance reading in the horiz osc/hv section, whose operation has always been a bit of a mystery to me. I have limited eqpt at my site workbench, a Fluke multimeter. I could use a schematic to help me trace the problem further. Google only found tech manuals for $20, which they can't spare, and being the pix quality was only marginally good, probably needs a new tube eventually too. Any help would be appreciated. PS: They dont throw anything out. Thanks, Rick Not many people repair these monitors, so the manuals are not readily available. I would check with local TV stations, Military bases, School systems, and places that install CCTV equipment. One may have the manual, or even donate a used, but working monitor. You may even get several donated, as long as you're a non profit, and can give a receipt for their donation. If that fails, they should see if someone will donate money for the manual. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#4
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Video Monitor Help
Shorted horizontal output transistor?
Bad flyback? Shorted poly cap in the width circuit? Shorted damper diode? |
#5
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Video Monitor Help
On Jul 8, 11:56 am, "Rick" wrote:
I volunteer at a small museum that has a bank of Panasonic WV-5490 CCTV monitors. One of them now blows the unreg dc fuse. Isolating different sections, I traced the problem to a low resistance reading in the horiz osc/hv section, whose operation has always been a bit of a mystery to me. I have limited eqpt at my site workbench, a Fluke multimeter. I could use a schematic to help me trace the problem further. Google only found techmanualsfor $20, which they can't spare, and being the pix quality was only marginally good, probably needs a new tube eventually too. Any help would be appreciated. PS: They dont throw anything out. Thanks, Rick I may have this manual on my site at http://www.justmanuals.com . All electrnic's related manuals just $9.99 and instant download. |
#6
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Video Monitor Help
justmanuals wrote:
On Jul 8, 11:56 am, "Rick" wrote: I volunteer at a small museum that has a bank of Panasonic WV-5490 CCTV monitors. I may have this manual on my site at http://www.justmanuals.com . All electrnic's related manuals just $9.99 and instant download. And you help yourself to the use of over a hundred thousand news servers to propagate your advertisement, but you can't donate one simple file transfer that costs you *nothing* to a volunteer at a museum? -- Postulate a group whose intent is to destroy the United States from within via anarchy and bankruptcy. The actions of the United States Congress are completely consistent with the actions one would predict from such a group. |
#7
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Video Monitor Help
clifto wrote in :
justmanuals wrote: On Jul 8, 11:56 am, "Rick" wrote: I volunteer at a small museum that has a bank of Panasonic WV-5490 CCTV monitors. I may have this manual on my site at http://www.justmanuals.com . All electrnic's related manuals just $9.99 and instant download. And you help yourself to the use of over a hundred thousand news servers to propagate your advertisement, but you can't donate one simple file transfer that costs you *nothing* to a volunteer at a museum? And he just says 'may have'! Doesn't even have the decency to check and see if he DOES have it. -- bz 73 de N5BZ k please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
#8
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Video Monitor Help
bz wrote:
clifto wrote in : justmanuals wrote: On Jul 8, 11:56 am, "Rick" wrote: I volunteer at a small museum that has a bank of Panasonic WV-5490 CCTV monitors. I may have this manual on my site at http://www.justmanuals.com . All electrnic's related manuals just $9.99 and instant download. And you help yourself to the use of over a hundred thousand news servers to propagate your advertisement, but you can't donate one simple file transfer that costs you *nothing* to a volunteer at a museum? And he just says 'may have'! Doesn't even have the decency to check and see if he DOES have it. If he had it, he would post a link. Its just more 'canned pig parts'. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#9
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Video Monitor Help
clifto wrote:
And you help yourself to the use of over a hundred thousand news servers to propagate your advertisement, but you can't donate one simple file transfer that costs you *nothing* to a volunteer at a museum? Do you really expect someone who's too cheap to pay for real advertising to give away ANYTHING? -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
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