Відео

Our pleasure!

I do not. May I ask why you ask?

@@RadiosTV hello, yes, to send you a private message. I have an oscilloscope i want to repair and i want to ask you if maybe you can help me.

You and me both, Michael, If you hear an explosion a little north from you, you'll know it went bad ;)

If you want to see more detailed photos of the HMV 2627, have a look at the forum thread. I've been documenting the set over there. It's far easier than trying to do a long-winded YT vid. Updates since the signals can be found here. www.radios-tv.co.uk/community/colour-television/1975-hmv-2726-coloumaster-thorn-4000/paged/4/#post-111746

I need to join your forum but I really don't know what I can bring to the table simply because most of what I use to know in the 70s and 80s I have forgotten.

Hi Michael, I seriously doubt you've forgotten as much as you think, and being among like-minded folk who were in the trade has this remarkable effect of promoting recall. I recall a good friend @john colman who is ex Thorn, not having seen a 2000 or 3000 series chassis in 40+ odd years. When he came over to my workshop, even he was amazed how instinctively his hands knew where everything was, and how it all started flooding back to him. Now he has the passion again, built a rather nice workshop and has a growing nice collection of Vintage TV's. There's a whole load of ex TV service engineers, on my forum. A couple of ex Ex Thorn (both subscribers here), DER, Philips, Granada, Radios Rentals, Rediffusion etc. Also, many who were self-employed independents such as yourself. There's even on guy who still has his shop that he opened in the 60s. I've mentioned you and your channel to a few, and many remember you from your articles published in Television. One chap also had many articles published on TV & VCR servicing, though using a pen name, as he worked for a Major company. If you ever did decide to join, you'd be very welcome and there's no pressure to post you can just read, and as you're ex trade, you'd have access to the data library. Not, by the looks of your well stocked shop, you'd need any data. p.s. Spooky, I got notification of your post whilst I was currently enjoying your "UMC TP. MSD309.BP76 Power supply blow up" video, with a cuppa and a biccy. Your channel is really taking off now, and righlty so. I've been working on the 4000 this evening, trying to grab some time before the hellish heat arrives. Sorted out the ultrasonic receiver and sourced some rare ERC3064 store IC's for it. I think I might need one as the service manual states if the set is powered without a battery it will fry the IC. The original had leaked, and you can bet someone has at some point in its past, has applied power, though probably not for many years, better safe than sorry. Sorry waffled on a bit. I'm getting back to you video, then back to the 4K.

Hi Howard, sadly not. I replaced the two pots (vol and tone) however, for the tone control to work (Fletcher-Munson effect) the volume pot needed to be a centre-tapped pot, I could not find for love or money, 20-25K LOG centre-tapped pot.

Hi Mark, thanks. This came from a farm not far from you in Haywards Heath. Probably provided Moooosic (plagiarised from Jim jcdaze) for the cows when they were being milked. That's not as daft as it sounds. An article mentioned this practice, and in particular a farmer in Darlington in the late 60s early 70s was doing just that. Most of these, however, would have been used, and what you heard, when shopping in Fine Fare or Woolies as a kid. The last photo on this link shows how it arrived here and how it looks now. www.radios-tv.co.uk/reditune/

@@RadiosTV Wow, the difference you recieved it to now is amazing. Really interesting to follow you bringing these back to life.

Hi ZX, thanks for taking the time to watch and leave a suggestion. Indeed, your idea is certainly an option worthy of consideration. I had also been wondering what to do. I did find a couple of solder mask products available, that might be worthy of investigation, one not too pricey, the other a little bit. Both look viable and quite interesting, I hope to cover them at some point.

Thank you for taking the time to post your very kind comment. I spent the evening creating a couple of new geometry jobs to generate new G-code. The first is to try using a 0.8 end mill bit, instead of the 0.2 V-bit. I set a pass number of 5 for track isolation, and that left only a few islands. My objective here is to only have the traces remaining, in effect a sort of physical solder mask. To achieve the full removal, there is a plugin that allows you to define additional copper to remove. I now have the two G-code jobs ready for the CNC tomorrow, we'll see how this one turns out.

Hi Michael, I was wondering what to do about the heatsink/frame. I had thought of using the one I had and making a cast. I then thought about constructing something from Aluminium. Thankfully, Jim, who is ex Thorn and was involved on the 4K project back in 74, came to the rescue, saving me a load of hassle.

Glad you enjoyed it Mark, there's more forecast over the coming weeks, we'll see. If it does, I'll continue doing the snow cam. Can't remember the exact year, think it was 2009 we had snow at Easter! As I think I've said before we seem to get it every year with Jan & Feb being the most likely though mid-November early December often sees a downfall. At least up here we still seem to have seasons, though speaking to elderly neighbours they've noticed it nowhere near as bad as it used to be, with the whole street coming together to dig their way out. I've only had to do that once back in 2010, my sports car disappeared on the drive and had to be dug out. Remember how I used to get the laptop out at work to play Xmas carols in November and all the way up to Xmas. Well this is the new tradition to get used to, I'll snow cam ya!

@@RadiosTV Yes I do remember playing those tunes on your laptop. I think thats why I loved the Christmas eve vid you did. Brought back many happy memories. Love these as they are so relaxing having them play in the background during a boring day working from home. Also enjoyed the walkaround of your workshop, both seeing it and your knowledge are both so impressive. Thanks Chris for posting them.

@@moggtock Well it looks like your lack of snow record might be broken. High probability the South East is going to get a dump this Sunday and possibly next week. Looks like we're in for another lot too.