Sony DCR-TRV740 & L&M StingRay Housing

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

munromh

Contributor
Messages
70
Reaction score
26
Location
Mystic, Connecticut
# of dives
I recently purchased a used L&M Stingray housing for a Sony TRV series camera .... Unfortunately the slide tray is for a TRV-9 (V9 tray) not a TRV-740 which I have, they're slightly different. If anyone has an L&M StingRay housing for a Sony DCR-TRV240 / DCR-TRV340 / DCR-TRV740 / DCR-TRV840 camera and knows how to use vernier calipers or micrometers to make some measurements to help me modify my tray to fit my TRV-740, I'd love to here from you. I realize the front plate might be slightly different and I might need some measurements there too.

Thanks,
Mark
 
I purchased the TRV740 YEARS ago and always wanted to put it in a housing but didn't feel like spending the $, to many other projects. I came across a Top Dawg housing on Ebay for a really good price that was for a Sony TRV series camcorders, problem is, it's for a TRV9 which is a different form factor then my TRV740. The tray in the housing has V9 milled in it. I designed and built an adapter plate to make the TRV740 fit the housing and it looks like it'll work real well. The problem I'm having is with the electronics. The controls all work, however, if I put the camera into hibernate with the PWR slider and wait for a period of time I can't get it to come back awake again using the PWR slider. If I press the record or photo button on the camera it will re-awake. But if I put the camera into hibernate using the PWR slider then take it right back out again, within sixty seconds or less, it will work correctly.

I've made a work around with a rod attached to the color filter knob on the front of the camera that I can rotate and push the photo button to wake it up, but this shouldn't be necessary.

1: I measured the Mic (pwr) voltage which I attach the electronics to and it's ~2.5 volts and goes to zero when in hibernate. I assumed this was my problem but when I supplied 2.5 volts to the Stingray electronics from an external power supply via this plug it still didn't work. I'm now assuming that the voltage level should be higher but I don't want to haphazardly test this theory. I see some Top Dawg electronics get power from a battery adapter plate which would mean the electronics get supplied 7.2 VDC. This would make sense since the electronics should run on 5VDC and there would just be a voltage regulator on the electronic.

2: I looked at the LANC connector (power) and realized that the camera supplies 5.5VDC to the Stingray electronics via the LANC connector and when the camera goes into hibernate the 5.5VDC goes away. HAH, I thought, here's the problem. So again I remotely supplied 5.5 VDC to the Stingray electronics via the LANC connections on the PCB .... darn still not working.

Any insight would be greatly appreciated,

Thanks,
Mark
 

Back
Top Bottom