my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Sticky dowser solenoid

Author Topic: Sticky dowser solenoid Jonathan Wood Expert Film Handler Posts: 206 From: Oxfordshire, United kingdom Registered: Jan 2008 posted 05-06-2017 08:10 AM                     Hi all Would anyone know why a dowser solenoid keeps sticking open after the close button is pressed.? It's a Vic 5 and the relay and bridge rectifier are all fine . The down button opens the relay fine and shuts off the DC. You then need to give the dowser a little tap and it shuts. Once it's shut and no current running through it , it moves up and down very easily so I don't think it's mechanical. Could it be that it's remaining slightly magnetised? Thanks as always , Jon  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 05-10-2017 04:11 AM                     Simple mechanical issue with this dowsers: It's usually the dowser lift arm that comes out of the housing. The solenoid really slams that arm up when opening and the arm hammers against that stop The metal where it strikes the stop pin gets mushroomed out where it drags against the casting and hangs up the arm. File down that mushroom and you should be good to go. A chronic issue with V-5's Good luck - Monte  |  IP: Logged Jonathan Wood Expert Film Handler Posts: 206 From: Oxfordshire, United kingdom Registered: Jan 2008 posted 05-12-2017 02:03 AM                     Thanks Monte! That's very helpful , I'll give it a go. Cheers, Jon  |  IP: Logged Allan Lyman Film Handler Posts: 35 From: COPENHAGEN, S /copenhagen,denmark Registered: Apr 2016 posted 05-12-2017 04:23 AM                     The dc magnets had a tendancy to keep its magnetic after power off.I dont remember if adjusting the buttom plastic screw helped,or if I simply had to change it.It sounds like this is your problem. alan  |  IP: Logged Jonathan Wood Expert Film Handler Posts: 206 From: Oxfordshire, United kingdom Registered: Jan 2008 posted 05-12-2017 08:27 AM                     Hi Allan I think you're probably right as I examined the arm following Monre's suggestion and it appears ok . It does feel like there is still a slight magnetic pull even after the dc is switched off. The RCM relay is also intermittent in its operation so I think I need to replace this too. Thanks , Jon  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.