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I removed the F3 fuse from the board and booted the machine up. It initialises goes almost all the way thru boot up, then I get a Mux 31 error. Then put F3 fuse back in and getting original error. Do you think it is worth installing a new board, or due to the age scrap machine ? I haven't installed a MPU board before though Billy

If it comes up with the error with lamps disconnected then you'll need to change the MPU.

A good saying is..... 'The good thing about standards is there's so many to choose from' Hope that translates OK.

Also it's not showing as a fuse out on the 6 green led's on the board

Hi Fruitsnappa File is coming up unavailable. Its still coming up MUX Col 32 ERR Then it cycles thru (Lamp Data 1 Err) then it changes the number up to about 15 I've looked at all the connections on the board everything looks fine 😕

Thanks jimxxx

Good evening. Thank you for the link about the speaker. I've read everything. I've also done a lot of reading on this topic of speaker impedance and resistor configuration. There are pros and cons, some agree, some disagree... in short...full of diverse and varied opinions. I haven't decided yet. For information, I forgot to mention it, the potentiometer is 50 ohms. It's almost over. Merci. Have a good evening.

Scroll to the bottom of the page and change the theme to "new". 👍

Sorry, there is a problem Something went wrong. Please try again. I keep getting this message pop up whenever I try and do anything? Anyone available to help?

https://www.ukvac.com/forum/threads/chrome-effect-ribbed-t-moulding.87278/

Think he was selling it on ukvac some time ago

I think he is al or at least he was last year !

Is he still about(i remember him from years ago)

As Bob said above, max volume is approx 60 ohm, so you could put an 8 ohm in and change the 27 to a 49 ohm resistor, whatever you do if it is not original it will effect the volume but you can compensate by setting the volume to your required level, some have just put an 8 ohm in and not turned it up as much. There is an old thread here. Well done on getting to this stage and hopefuly there wont be any more previous owner errors to sort out.

andy keptboy has loads of it or he did ... might be worth messaging him ?

hello and welcome

Good evening. So, here's the report about the sound. All the sounds arrive on IC19 Pin 2 and exit on Pin 3. The normal playing noise is a 781 Hz square wave. The alarm is at 3.13 kHz. There's no signal on Pin 1 of IC19. It might not be used on my machine. Anyway, the sound works, because I had T11 reversed. The old boxes are reversed with the new ones. What goes wrong, goes wrong. (redo) . 🙄🙄 Regarding the tubes, I think there's a small problem; but I need to check their operation compared to the other machine. For the speaker, I found a 50 Ohm resistor. If I remove the 27 Ohm resistor and bridge it, will that work? https://composantelectronique.fr/haut-parleur/716-haut-parleur-philips-50-ohms.html Thanks for sharing your knowledge.

I will message you

Yes that would be great ,how do I pay?

I could send you both for £18 posted

Thanks might be worth a try ,how much is it?

I have no idea sorry! Also I have no way of testing them, pulled from a box of around 50 displays I have

Would rev A work mine is rev B ,thanks

Got a couple

One for sale here https://tinyurl.com/23wpo8bs Seems quite expensive though?