Master Series 12V Hiroses Lost Power
Posted 13 May 2010 - 04:44 PM
Posted 14 May 2010 - 06:47 PM
Posted 15 May 2010 - 03:51 AM
I know your pretty techie so you have probably checked this already. I recently changed over my original crt to a transvideo cine3a. in doing so I had a fly lead made so I could keep the original crt as back-up. What I didn't do was re cable the existing hirose cable that fed through the monitor mount. This ment that I was bending the cable quite a lot and probably due to this, old cable and wear and tear the cables actually broke or sheared inside, causing the power to short with video. This was on a prep the day before a shoot which led to a not so nice franken-rig for the shoot day. As I said, you have probably checked all this but at the time this was blowing fuses in the batteries and I had no power or video plus because of the webbing around the cables made this very difficult to find. Might be worth a look.
Hope your well
Posted 15 May 2010 - 07:45 AM
There is a power supply board underneath all the other boards that provides +12V via one DC-DC converter, and +5V and -5V via another DC-DC converter. The first sends power to the hirose's, the other powers the video and horizon boards. There are several caps on this board that may have gone bad. It's also possible that the board or the connector may have come unseated.
Posted 15 May 2010 - 05:38 PM
I've got the same setup with the Transvideo. I checked the wiring and all is fine. Thing is, the monitor gets power, just no video. Probably going to rewire anyway because I can see a bit of wearing of the insulation at certain points.
Thanks a ton for the info. A few quick tests with the meter on the circuit board shows the Acon D15S1212 DC to DC converter receiving the full battery voltage in, but nothing is coming out. Looks like none of the normal electronic distributors stock the product. I'll check with Acon directly. Would Tiffen have any of these on hand? Any idea of the price? I found what seem to be a few suitable replacements in the $50 range.