Go Back   World-Designs-Forum > World Designs > Problems
Register FAQ Members List Calendar Gallery Today's Posts Mark Forums Read

Problems For questions and answers re World Designs Projects

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 23rd January 2019, 09:12 PM
davew davew is offline
Junior Member
Join Date: Feb 2006
Location: Deal
Posts: 12
Default Problems with K5881 MK2


I've been running my K5881 MK2 for over 10 years now. it's a great little amp - The only problems I've had are the 2 O/P transformers failing - (I got 2 replacements from Geoff at for 200)

The problem that I have now that after running for a while the amp makes a very loud physical buzzing - not hum.
I'm assuming that this may be due to heavy load on the mains transformer although I can't really locate the source of the buzz.
I ran the amp with only one set of valves on each channel in turn and it seems OK so possibly its the extra load on the PSU causing a failure somewhere.
There's only a bridge rectifier, smoothers and choke - I'm hoping it's not the mains transformer this time! - Anyone seen anything similar before I do further testing?


Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT +1. The time now is 02:09 PM.

Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Copyright World Designs