Xenarc 706TSA No Display

**PatD** · 10-01-2009, 09:13 AM

When I got mine back, it was preceded by an email stating that they replaced the input box, and the monitor control board. First SN# was in the 90's now in the 120's. I think they just forgot the R part of R&D. 20 bones for shipping eh? I paid $50 to get it to them, and looks like I'm gonna have to do it again.......

**PatD** · 10-13-2009, 09:20 AM

Ok as weird as this sounds, if you are having the same problem, try this:

Before turning your screen on, shine a flashlight at the photosensor for about 10 seconds, then give it power... Mine seems to work every time like that.

The screen seemed to work less often in the morning when I get out of work, and lately (as the sun sets sooner) when I go to work. Any time it is dark out, the problem seems random, but rarely ever in the day.

Now Xenarc just needs to supply flashlights with all their 706 screens.....

**rodweb** · 10-14-2009, 01:50 AM

Well so far, in every instance, in this thread, the fault has been the input box. I suspect this has something to do with the fact that the screw terminal posts on the input box for the interconnect cable are too low and don't let the cable screws engage properly so the connectors short out or something. I now cable tie to the connector to the input box but have still had it fail once with awful green stuff on the screen. I wiggled the connector and all was good again.

Sadly it seems Jimmy is no longer at Xenarc as an email I sent him got returned.

**PatD** · 10-15-2009, 09:31 AM

As soon as this problem resurfaces for you, and it will, try what I said. I know, sounds dumb, but it would appear that the ccfl circuit is looking for some type of voltage from the photosensor. I have to deal with this EVERY DAY, twice a day, as I work nights. I go to work in the dark, and get home in the dark. My units, first OR second one have NEVER failed during daylight. My connection is as secure as possible, I use tape rather than zip ties around the box.

I have noticed that if i shine a flashlight on the photosensor, allowing enough time for the sensor to generate a bit of current, the monitor will turn on every time. If I do not, it will fail, every time.

The problem may well be in the input box, but replacing the input box is NOT a solution. It's a band-aid. Diagnosing the problem, and correcting it in models before they go out IS a solution, as well as correcting RMA'ed units with a fix rather than replacing them with yet another defective unit.

**rodweb** · 10-15-2009, 04:55 PM

PatD,

Do you have the auto brightness enabled? I disabled mine very early in the piece as I found I did not like it. Maybe try that.

Now my sensor is behind the dash so it does not work anyway.

**PatD** · 10-18-2009, 08:03 PM

I have the sensor disabled, but have tried both.

**Sleet** · 12-11-2009, 01:57 PM

My did not join to. Here that was with my monitor
http://sleet1019.users.photofile.ru/.../133469535.jpg
It is a cable inside of the block of management.

**xenarctech** · 12-16-2009, 05:22 PM

Hi Rod,

I am still here. Maybe our e-mail server had an issue. We have new screw terminal posts on the input box for months. Please shoot me an e-mail and I will get you a few.

-Jimmy

Originally Posted by rodweb

Well so far, in every instance, in this thread, the fault has been the input box. I suspect this has something to do with the fact that the screw terminal posts on the input box for the interconnect cable are too low and don't let the cable screws engage properly so the connectors short out or something. I now cable tie to the connector to the input box but have still had it fail once with awful green stuff on the screen. I wiggled the connector and all was good again.

Sadly it seems Jimmy is no longer at Xenarc as an email I sent him got returned.

**xenarctech** · 12-16-2009, 05:22 PM

That's new. I haven't seen this. Please contact us and we'll get you a new cable.

Originally Posted by Sleet

My did not join to. Here that was with my monitor
http://sleet1019.users.photofile.ru/.../133469535.jpg
It is a cable inside of the block of management.

**xenarctech** · 12-16-2009, 05:35 PM

Hi PatD,

This is the first time I hear about this (I didn't work on your RMA) and I haven't heard about the same complaint from other customers. This is good information though as we would fix a problem if there is one. It also doesn't make sense for us to have to spend money on labor and shipping repeatedly if the same problem just keeps arise. We want to go down to the root of the problem and fix it permanently. I will have our engineers take a look at the photosensor design and see if there is anything wrong with the design in your application. Please send me a PM or e-mail to jhu@xenarc.com with more information such as how your comptuer and monitor is used and the spec of the computer. We will work with you to make sure that the same problem doesn't happen again and I'll make sure that you don't have to spend another dime.

Originally Posted by PatD

As soon as this problem resurfaces for you, and it will, try what I said. I know, sounds dumb, but it would appear that the ccfl circuit is looking for some type of voltage from the photosensor. I have to deal with this EVERY DAY, twice a day, as I work nights. I go to work in the dark, and get home in the dark. My units, first OR second one have NEVER failed during daylight. My connection is as secure as possible, I use tape rather than zip ties around the box.

I have noticed that if i shine a flashlight on the photosensor, allowing enough time for the sensor to generate a bit of current, the monitor will turn on every time. If I do not, it will fail, every time.

The problem may well be in the input box, but replacing the input box is NOT a solution. It's a band-aid. Diagnosing the problem, and correcting it in models before they go out IS a solution, as well as correcting RMA'ed units with a fix rather than replacing them with yet another defective unit.