Service Engineers Forum

Search the Forum

Television Faults

Video Faults

Monitor Faults

Register For Our Free News Letter

Help Wanted!!

Parts or Items For Sale

Items Wanted

General equipment failure when units warm / hot in high humidity environments

  Home | Search | Products | Tips | Newsletter | For Sale | Wanted 

Click here to return to the Miscellaneous Tips index page

All repair tips and service information on these pages are supplied as per our site terms & conditions PLEASE READ

Author: Greg York

Various Models / Chassis
General failure when units warm / hot in high humidity environments. Units operate normally once cold, failure only occurs occasionally then seems OK but when warm fails again
Many PCB's/components have contamination which will manifest themselves in warm and humid environments, so once unit is warm then electrical failure occurs. Clean circuit first in solvent/water combination and retest unit. Failure should disappear. If corrosion found on joints then reheat with soldering iron which you may see joints bubble then clean PCB thoroughly. Best to soak in cleaner then wipe around with lint free wipe especially around powered components. NOTE contamination is typically hygroscopic and will attract moisture if particularly bad will electromigrate if not too bad then poor SIR Surface Insulation Resistance (occasional unexplained failure) Could go on for long time but this is only the start! Does this sound familiar to anybody ??

Copyright © 2000 - 2003 - E.C.S (Technical Publishing)
Site Design & Layout © 2000
All Rights reserved

All Information is supplied as per our Site Terms.
Use of this site deems your acceptance of these terms.
Click links to view our Site Terms and Privacy Policy

repair home page search the forum tv faults video faults monitor faults free newsletter fault help ask here repair items for sale repair parts spares circuits wanted