Johnc

Actually 8 track are collectors items but i can watch my betamax videos and service my ford anglia lol

Changed the reed switch. All works fine now. Good for another 20 years Thank you so much to everyone that responded

I believe its the reed switch that has failed. Any advice on which type to buy?

Should I try disconnecting the backup battery that sits inside the 4600 control panel, power of the mains to the house. Wait a couple of minutes, reconnect the battery and switch on the mains. Would that reset the panel? Or would it loose all the codes when power is restored. Ie all the other zones would they be operational if no dips are touched Thank you

Thanks everyone for their comments. Have put a smile on my face considering worldwide issues with the pandemic. good old CRT TV's and Videos. Nostalgia going down blockbusters to rent the latest movie. Before I throw this unit in the bin: Please see attached file it seems to me if I enter engineering mode then 5 followed by 4 for zone 4 then clear it should remove that zone altogether from the control panel. If I can remove offending Zone altogether this would do till lockdown is over. just sanity checking.i have disabled the batteries on 2 contacts, zone 4 the faulty one and zone 2 another door ( which I know works) , so 2 units have batteries disabled via dip switches on the units but if I do walk test on the alarm panel it still shows a tamper fault for zone 4. I believe the control box has got its pants in a twist. Page 5 to 7 of document Ay thoughts to keep it running in the interim? PS My thoughts have always been "if it works leave it alone" - i bet a new system wont last 25 years..... Like todays cars all plastic and electronics to go wrong..... Many thanks

Yes the zone in question also illuminates. I had taped both tamper switches. The red led can still set the tamper alarm on the 4600 panel

Tried looping cables and re inserted board into housing and tested it but the tamper alarm always goes when when trying a walk test On the front door is only the unit. There are no cables at all. All 4 terminals are empty. Thanks to everyone for suggestions Sorry meant to add enabled battery dip switch for testing purposes

Problem still the same . I removed board and replaced it with the one on front door( which works fine) which requires no additional wires, ( just the board in casing on door frame and a magnet on the door ) without changing any of the dip switches. It does not read the magnet on the front door. If unit was ok I would expect it to read that zone. As soon as you open or close the door under normal circumstances the red led light should come on. My deduction is the unit communicates ok with scantronics 4600 control box. The tempers work ok because if if move the board in your hand the tamper alarm goes off. It does not read contact with door magnet. I found a scantronics control box and 3 pirs on Ebay 2nd hand but could be a risk. If I could replace faulty contact with a pir in the same location that would work. Any advice or would I be wasting my money

How to setup two links on the 4600 terminals, do you mean on the faulty unit or the 4600 main control box. Not sure what the process would be to setup two links

To the company in Storrington, if you can let me know the name or contact details I shall contact you once restrictions are lifted. Many thanks

Sure I shall take some photos tomorrow. Thank you for your help

It has a metal clip on the front and a little button on the back which I assume is the tamper. I have placed unit back it its housing so that tamper switches will be pressed in but makes no difference. Sorry what do you mean by "linking everything out"? Mr Wilson if you could explain a little it more I could try your suggestion. Kind regards

Meant to add even with the dip switch off for the battery, ie battery turned of on the board the alarm still indicates tamper if you try to do a walk test

I have checked the wiring and it's ok. If I remove the unit from the wall and take it next to door magnet it does not read it. It is as if the board no longer recognises a magnet. And the scantronic indicates tamper all the time for that zone My other contacts which are equal all work fine Thank you Any advices on a good company and alarm make in west Sussex I dont want to pay silly money with over inflated prices and sales pitches Many thanks for all your replies so far