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Old 22nd Dec 2016, 5:18 pm   #19
indigo.girl
Retired Dormant Member
 
Join Date: Apr 2016
Location: Loughborough, Leicestershire, UK.
Posts: 754
Default Re: My first valve radio project - Philips 462A

Quote:
Originally Posted by Station X View Post
It's highly unlikely that a 330pF capacitor will need replacing and it certainly isn't the grid coupling capacitor.

Confusion has arisen because the two service sheets being used have different component designations. This is hardly surprising, as component designations are largely arbitrary.

As far as the manufacturer's sheet goes, the cap you need to replace is C31.
Oh dear - I have been using the manufactures datasheet but the capacitor numbers mentioned above have been from the traders service sheet. This means I've now removed 4 capacitors in error.

I have accidentally removed the C21 (330pF) which is actually C11 on the traders sheet (the osc circ ME fixed tracker). I have also accidentally unsoldered 3 yellow wax DUBILIERS from a tag strip. These were C27, C16 and C29 from the manufacturers datasheet but actually C14, C6, C17 respectively on the traders sheet

Never mind - all good practice and I think I'll just replace them now with new ones now they are out
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