G7MRV Posted April 16, 2023 Share Posted April 16, 2023 Hi all, I've a number of ptc404s in various states of functionality, Can anyone furnish me with circuit diagrams for the PCBs? I'm also missing flow charts 2 and 5 for fault finding Cheers Martin Quote Link to comment Share on other sites More sharing options...
G7MRV Posted April 17, 2023 Author Share Posted April 17, 2023 Also , if anyone could tell me what the ringing voltage should be and whether its AC or DC that would be helpful Martin Quote Link to comment Share on other sites More sharing options...
fv1609 Posted April 17, 2023 Share Posted April 17, 2023 You're probably aware of this thread: https://hmvf.co.uk/topic/32129-racal-feild-phone-uk-ptc-404/#comment-497683 Circuit diagram to be going on with flow charts 2 & 5 to follow. 1 Quote Link to comment Share on other sites More sharing options...
G7MRV Posted April 17, 2023 Author Share Posted April 17, 2023 That is absolutely fantastic! Thankyou! That will make Life so much easier Regards Martin Quote Link to comment Share on other sites More sharing options...
fv1609 Posted April 17, 2023 Share Posted April 17, 2023 There are these & bit more to come. Quote Link to comment Share on other sites More sharing options...
fv1609 Posted April 17, 2023 Share Posted April 17, 2023 A bit more. Quote Link to comment Share on other sites More sharing options...
G7MRV Posted April 17, 2023 Author Share Posted April 17, 2023 Outstanding! Brilliant Stuff, thanks Quote Link to comment Share on other sites More sharing options...
fv1609 Posted April 17, 2023 Share Posted April 17, 2023 Thanks for saying thanks, it does make a difference. If you get stuck there is more in the AESP but it is too much to copy all in full. Might work you on the air one day, 73 de GW4MBS Quote Link to comment Share on other sites More sharing options...
G7MRV Posted April 21, 2023 Author Share Posted April 21, 2023 No problem - I spend my working life Trying to get kids to be polite! (and to do some bloody work...) The info so far will allow me to complete the repairs, but any further info/scans etc would be great - especially details of the ring voltages and whether ac/dc etc A complete service manual equivalent would be wonderful but anything you're happy to provide me is appreciated Cheers Martin Quote Link to comment Share on other sites More sharing options...
fv1609 Posted April 21, 2023 Share Posted April 21, 2023 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.