Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Wonder2121 on March 04, 2022, 01:17:18 pm

Title: Wem Westminster MK9 schematic question
Post by: Wonder2121 on March 04, 2022, 01:17:18 pm

Hey all..
Can someone tell me where on this schematic http://www.vintagehofner.co.uk/britamps/watkins/schematics/westminmk9.html (http://www.vintagehofner.co.uk/britamps/watkins/schematics/westminmk9.html) can I find these two circled in pic-

CANT POST PIC ITS SAYING Attach File - Please copy all your text first:
WHAT DOES THIS MEAN???

Title: Re: Wem Westminster MK9 schematic question
Post by: isaac_teller on March 04, 2022, 01:31:28 pm

Seems like it's the cathode resistor and the cathode bypass cap of the power tubes(ECL82).

Title: Re: Wem Westminster MK9 schematic question
Post by: uki on March 04, 2022, 01:34:22 pm

Hello and welcome to the forum !

Quote

CANT POST PIC ITS SAYING Attach File - Please copy all your text first:
WHAT DOES THIS MEAN???

Here is a how to about posting pictures: https://el34world.com/Forum/index.php?topic=14521.0

The components circled in the image are in the schematic, the 200(210) ohms resistor and 50uF capacitor in the following picture. Assuming the provided schem is the right one.

Title: Re: Wem Westminster MK9 schematic question
Post by: sluckey on March 04, 2022, 01:39:05 pm

Quote from: Wonder2121 on March 04, 2022, 01:17:18 pm

Hey all..
Can someone tell me where on this schematic http://www.vintagehofner.co.uk/britamps/watkins/schematics/westminmk9.html (http://www.vintagehofner.co.uk/britamps/watkins/schematics/westminmk9.html) can I find these two circled in pic-

CANT POST PIC ITS SAYING Attach File - Please copy all your text first:
WHAT DOES THIS MEAN???

see pic...

A long time ago the forum software had a glitch that would randomly cause all the text you had typed into your reply to disappear when you added an attachment. So that warning was added as a reminder to copy all the text you had just typed into the reply box to the clipboard just in case this happened to you. Then you could just paste the text back into the blank reply box. I believe that software glitch has long been fixed.

Title: Re: Wem Westminster MK9 schematic question
Post by: Wonder2121 on March 04, 2022, 03:18:41 pm

Thanks explains pic problem.

Yeah your right I was counting pins back to front runs to pin 2 not 7...
While chasing this board out can anybody tell me what these two pea sized resistors are, they look glassy, one runs to treble/on/off switch.

Title: Re: Wem Westminster MK9 schematic question
Post by: pdf64 on March 04, 2022, 03:22:10 pm

Those are polystyrene caps.