Nice bit of fault finding there Tony

@TonyAlbus

Ай бұрын

Thanks George! ..

Excellent. Nice piece of equipment. Hopefully an easy fix once the parts arrive :)

@TonyAlbus

Ай бұрын

Thanks, yes lets see.

Nice old counter, made when I was just starting school :o Made in UK too. Looking forward to part 2.

@TonyAlbus

Ай бұрын

Glad you enjoyed it!

Nice work, Tony! I saw that discolored tant when you first showed the Phillips chip and shouted "Shorted tant" at the screen but you didn't hear me 😂. Probably the tant shorted and took out the transistor. Regards, David

@TonyAlbus

Ай бұрын

Thank you David... i think the screaming helped, we found the problem, thanks for your help, and comment

Thanks for another interesting video... 👍👏😻

@TonyAlbus

Ай бұрын

Thank you too!

Very nice work! You make it look easy.

@TonyAlbus

Ай бұрын

Thank you, i was luckey teh service manual was very good in explaning the signal path... must admit first time i seriously read one also :) reading them makes your life more easy then staring at the scematic and trying to find out. or Racal was just very good in describing.

I see lots of red dipped tantalum caps, I expect you will find at least one that is shorted, whenever I see the red ones I definitely see red… make sure the main power supply has very low ripple to try to prevent the tantalums blowing up.

@TonyAlbus

Ай бұрын

Thanks, so the red ones are the worse... will do that extra check on the psu caps..

I've made space for dim-bulb box at work area to be used for all new-old equipment. I'll use it until I have some confidence there will be no catastrophe. I feel I've just been rolling the dice by relying on a finger close to the power switch for that smoke making fault.

@TonyAlbus

Ай бұрын

Yes that bulb trick is used a lot in the valve/tubes community, great idea.

@jspencerg

Ай бұрын

@@TonyAlbus I don't use VT's much, but I'm wary of those old capacitors.

Those Philips OM modules are easily replaced with a modern MMIC chip. The Philips modules were extremely unreliable and noisy too, but were used in many devices back then.

@TonyAlbus

Ай бұрын

Yes for the Marconi are kits available with MAR-3SM chips... i talk about it in the video and left links in the description

ciekawy miernik i ma wzorzec ocxo to ważne by dokładnie pracował. Jaka max częstotliwość jest jego ? Widzę że ma miejsce na rozbudowę.

@TonyAlbus

Ай бұрын

Yes seems very stable indeed, it goes upto 680 MHz, but i think we can push it a bit more, i will try when it is fixed, to see what is the max.

I have an HP frequency counter on my lab bench i have not used in a decade. Just not a piece of equipment that brings value to what I do. If I need frequency I use my scope measure. If I need a counter I use my scope search. Maybe I might need to count something over a few days and I might use it again one day or I may never power that thing up again but I do now and then enjoy pushing those hp break away buttons.

@TonyAlbus

Ай бұрын

The HP counter are nice too, you will find a few in my videos too.