Question about RTO Wonwoo Rapport337 Professional CCTV Tester

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Rapport cctv tester servicing center

Rapport cctv tester not working

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I have RAPPORT Ver3.1, but screen is not functioning, can i have a copy of complete diagram of this unit? Kindly send it to my e-mail Thank you.

Posted on Sep 23, 2011


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Posted on Jan 02, 2017


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I have a rapport 337. It won't work with the batteries it tries but screen goes blank. It works fine if it is plugged into the wall. Any help with this would be appreciated. than you

Production of this tester has been discontinued by the manufacturer.

I read a review of this tester, and that person cautioned on the tool's short battery life. He said you need to use high capacity NiMH batteries. He says he's lucky to get an hour of life out of a freshly charged set. Furthermore, the tool does not like to even power up if there is less than a 3/4 charge left of the batteries. He recommended removing the batteries when done using the tool and placing them in a smart charger until needed again. ALL NiMH batteries self discharge even when not in use. You should always have and install freshly charged batteries when you need to use the tool.

If the batteries are old (had many recharge cycles) or were not charged in a smart charger the useful life may have become significantly reduced and in need of replacement.

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Hi.. I have Rapport 337, I got problem screen on it, the screen is blank like no power but other functions work normally. I don't have idea why the blank screen occur because two days before we...

I have also RAPPORT337 with the same problem mention above about black screen.Since i am a TV technician, I tried to open it and check and I notice that there's no voltage supply on the screen. I found the regulator 7805 has no voltage input, what I did is looking for temporary input 12v, connect to the input of 7805 and it has a screen light. I was used it normally by using 12v AC adapter, BUT if I used DC battery, again it return to black. NOW, since the manufacturer is using 3layer circuit board, this is very hard trouble for us to look the exact location of the problem.I urged the manufacturer to send us complete diagram for this unit so that we can help other people to solve this problems.Send it to my e-mail address:

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Turn off CCTV. Or Closed Caption. Several settings in the menu for CCTV. Just be sure they are off and your box should be gone.

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I will check on MON with my contact if getting a full service repair manual is even possibly with them. If it is I know for fact it will be expensive no doubt.

I almost hate to say it but I don't think one is going to be available to an end user DIY like you possibly are. A camera service center YES. Comes from my prior career days working inside a major hospital as a BMET repair Tech. Medical equipment was very complex and the service manuals for said equipment had to be the same as to detail & calibration of whatever we worked on.

I will post my results on MON.

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