Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Television Broadcast Gear

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 05-25-2016, 02:38 AM
austvarchive austvarchive is offline
VideoKarma Member
 
Join Date: Jul 2006
Posts: 117
Betacam Camera, Delamination of Filters

Picked up this nice first generation 3 tube Betacam camera today.

It was apparently destined for the council rubbish collection but someone saved it.

Got it home and powered it on, viewfinder came to life, then smoke poured out from inside the camera head.

Silly me had powered it on in the loungeroom, stinky smell for days!

Pulled it apart and discovered a tantalum capacitor had taken itself out. I replaced it temporarily with an equivalent eletrolytic.

Powered back on (in the laundy this time), no more smoke, but viewfinder flickered and rolled intermittently and there seemed to be a picture!

Plugged in an external monitor and was pleased to see perfect color bars were being output, but the cameras output from the tubes was almost b/w and washed out.

Eventually discovered a switch called "detail" was on, turning this off the image returned what looked almost normal with good color.

Sadly though, the filter wheel has become delaminated or mould growing inside the glass so all the camera can see is a blurred view of the world through it.
Reply With Quote
  #2  
Old 05-27-2016, 05:43 PM
Dave A's Avatar
Dave A Dave A is offline
VideoKarma Member
 
Join Date: Aug 2003
Location: SE Pennsylvania
Posts: 1,529
It looks like a Sony (sometimes badged Ampex) BVP-3 (Saticon tubes) or a BVP-30 (Plumbicon tubes) and in sad condition. You will spend the rest of your life making it work if caps are blowing. I have never seen the delamination but dampness will do that. Try to find a good one at the usual places. They do still work...like my 30...and are cheap. Save the BVP-1 deck. Record only. No playback. A lot of trust while on remote in the day.
__________________
“Once you eliminate the impossible...whatever remains, no matter how improbable, must be the truth." Sherlock Holmes.
Reply With Quote
  #3  
Old 05-28-2016, 11:07 AM
BrianSummers's Avatar
BrianSummers BrianSummers is offline
TV Camera Museum Curator
 
Join Date: Jan 2009
Location: Surrey in the UK
Posts: 109
delamination of filters in early Sony cameras can be a problem, if it is just the ones in the filter wheel, see if the camera will focus OK with one removed.
__________________
Regards Brian

Visit the Virtual Broadcast TV camera Museum
Reply With Quote
  #4  
Old 05-30-2016, 06:32 AM
kf4rca kf4rca is offline
VideoKarma Member
 
Join Date: Feb 2015
Location: Atlanta
Posts: 737
Make sure the bias light is working (easy to check). One of the filters is clear so it should not be a problem to evaluate. Do you have an extender board? It has a large cutout in it.
__________________
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:21 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.