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Need schematic and service manual for Leader LCG 400 video signal generator with multi burst

I have a dead device bought on eBay. Seller did not say it worked, but I looked so good I figured it must. Wrong! Without parts list and information on the capacitors, I am lost. Heellllpp!

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: Viking service manuals and parts

You can see thier contact information and find a local servicer (who may also sell parts) here: http://www.vikingrange.com/consumer/footer/contact_us.jsp?id=cat50013 By phone: "If you wish to speak to a customer service representative please call us at 1-888-VIKING1 (1-888-845-4641), then press 1."

Posted on Sep 22, 2007

  • 1 Answer

SOURCE: no signal using multi cable

Hi! Had encountered this problem also. Dont lose hope, there's a solution to it. First, turn off console using switch at the back and disconnect HDMI and connect AV Cable. Turn on console and after seeing red light in front of PS3 press the soft touch ON button in front for 5 SECONDS. Your TV would flicker a while but then it would display the PS3 XMB. To be sure with this solution, you can find it in the troubleshooting page of the manual where the same problem is also stated. That would be all. Good Luck!!

Posted on Oct 04, 2007

  • 1 Answer

SOURCE: I need a user manual for a Leader LBO 522 oscilloscope

You can find the manual for a LBO-522 (amoungs others) at http://bama.sbc.edu/leader.htm

Posted on Jul 10, 2008

  • 103 Answers

SOURCE: NDSL top LCD screen ebay quality?

Votahuan,

There are different quality screens arround, but the described problem has nothing to do with the quality of the screen and it looks like the resolution of the screen is not ok. The problem appears sometimes if the flatcable is put in to the connector and bend to much due to pressig it in this connector. I've seen that problem here sometimes. The screen is send to the customer in good order but is become defective due to incorrect manuals, missing warnings and customers that don't know what they are doing.

Try to contact te seller and ask him to replace the screen. Hopefully he wil do that.

John

Posted on Sep 27, 2008

angelus316
  • 41 Answers

SOURCE: RICOH IS330 service manual

The parts manual is 4mb big .With the service manual it comes to 16 mb.send me a e-mail and i'll send the manual as a attachment.

Posted on May 22, 2009

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I get an error message. No signal. Shutting down with both my computers. I bought a new cable but that didn't help.


By shutting down do you mean you get a signal then it goes to no signal, or does it just show no signal regardless of what PC it's on? It sounds like you have display and backlight to see the no signal message so I would guess that the board inside that takes incoming video and sends it to the display has gone bad, or a component gone bad. Anymore electronics get 2 to 4 yrs old and electrolytic capacitors swell or burst on top causing problems from totally dead to weird errors that seem like something else. It just comes out of the blue too, most time no advance warning. Without getting inside the monitor to check it's hard to tell but someone that does bench repair should catch it if there are swollen or leaking capacitors especially if you mention fr them to check for them. If not then it's possible the video display chip has gone bad and a new board is needed. Probably not available anywhere but a seller that parts out working off lease equipment such as on ebay. You've already done what you should by trying a new cable and trying on more than one machine.

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I just bought the unit used off ebay - wont scan


I would contact the seller for that information. Also check the ebay listing to see if the seller offers a DOA( Dead on Arrival) return. It would probably cost you more to repair it than to just buy a new one. The seller should be responsible for providing that information to you or to accept the return on the item.

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NDSL top LCD screen ebay quality?


Votahuan,

There are different quality screens arround, but the described problem has nothing to do with the quality of the screen and it looks like the resolution of the screen is not ok. The problem appears sometimes if the flatcable is put in to the connector and bend to much due to pressig it in this connector. I've seen that problem here sometimes. The screen is send to the customer in good order but is become defective due to incorrect manuals, missing warnings and customers that don't know what they are doing.

Try to contact te seller and ask him to replace the screen. Hopefully he wil do that.

John

Sep 27, 2008 | Nintendo DS Lite Console

1 Answer

I need a user manual for a Leader LBO 522 oscilloscope


You can find the manual for a LBO-522 (amoungs others) at http://bama.sbc.edu/leader.htm

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No Color on Zenith SG5257S


Hello Nexium7,

The best place to get a schematic would be from the manufacture Zenith, However you can try www.servicemanuals.net The cost for the schematic is $23.99.

I would suggest you start by using a color bar generator to send a known good signal in to the RF connector on your tV then go to the output of the video detector to look at the video signal, what you should find will be on the schematic, which should be the video signal with color burst if the color burst is not present or low in amplitude this is your problem and the trouble is happening before the video stages. If the burst is ok the you will have to test along the video path until you get to the point that the burst signal is no longer present, and then you will know the stage which the problem is occurring.

In any event you will need a schematic, multimeter, oscilloscope, and signal generator (color bar and raster purity)

Thank you,
Shuttle83

Nov 26, 2007 | Televison & Video

1 Answer

Looking at PS3


Hi Rookie Buyer,

 

I am an Experianced Ebay Membr and have bought many Video Game Consoles from ebay. Now I also run a Video Game Console Service called the Playstation Clinic. The problems i have repaired so far on PS3 consoles have only been bad solder joints.  Now, not many peiople are sending their PS3 systems to aftermarket repair services. Sony is still good about servicing the PS3.  If you buy it from Ebay, you will not have a store receipt. And in turn the chance that Sony will honor the warranty, is very deminished.

I do not like buying from stores that cannot tell me details of what is wrong, your taking a big chance here.

Your best to get a Used PS3 on Ebay from a individual with high Feedback score percentage above 98%, and a count around 50 to 400. Also inside the USA. China does not package stuff very well. They ship fast, but they will send you a crytal glass in a paper bag and not even mark it fragile.

 

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2 Answers

TELEVISION


This may indicate a problem with the signal processor IC (Integrated Circuit)or the color burst signal might have insufficient amplitude which would also lead back to the signal processor IC. You will need a schematic to find the IC and you will need a multimeter and an oscilloscope to view the video waveform. If you do not have a background in electronics do not attempt this repair on your own please take the set to a qualified repair shop. The loss of color points to the loss of the color burst signal or the failure of the video circuitry to respond to the color burst signal.

Sep 20, 2007 | Televison & Video

1 Answer

Service manual (schematics)


I just bought a service manual on Ebay. I'm not at home so I don't remember the vendors name, however it was $8.50 and the documentation seems complete. I also just found this site: www.john-oliver.net/video/50H81.pdf which contains a block diagram but not the full set of schematics. If you really need the schematics let me know and try and get them to you.

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