Re: CRT Monitor Odd Behavior

"Jerry G." <jerryg50@xxxxxxxxxxxxxxxxx> writes:

With the ageing of the monitor, the power supply regulation and scan
circuit stability has decreased. The most common cause are electrolytic
capacitors going high in ESR. If all the capacitors in the monitor were
to be checked with an ESR meter, there is a possibility of finding many
of them out of specs. This may not be a feasible repair for a monitor as
old as the one that you have.

While I won't claim to have anywhere near the experience that you have,
what I have seen suggests that in many cases, it may infact be a single
bad cap with high ESR that is the problem, especially if the monitor or
TV had no obvious symptoms before.

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.

.

Relevant Pages

  • Re: CRT Monitor Odd Behavior
    ... With the ageing of the monitor, the power supply regulation and scan ... capacitors going high in ESR. ... If all the capacitors in the monitor were ... I see the picture expand or if I open a window I see the picture shrink. ...
    (sci.electronics.repair)
  • Re: CRT Monitor Odd Behavior
    ... The most common cause are electrolytic ... capacitors going high in ESR. ... If all the capacitors in the monitor were ... This may not be a feasible repair for a monitor as ...
    (sci.electronics.repair)
  • FS: [Melbourne-Australia] Massive computer and electronics garage sale! SATURDAY 3RD JUNE 9AM
    ... Massive computer and electronics garage sale! ... a variety of electronics gear, ... computer, monitor, 2 disk drives, cables, books ... keyboard clips up over front panel to carry ...
    (comp.sys.cbm)
  • Re: Apple II video problem?
    ... Next time I feel brave enough to crack open the monitor case, ... capacitors if the equipment has been off for a few minutes. ... The simplest way to proceed is to simply AVOID the anode connection on ... even if there is no insulation. ...
    (comp.sys.apple2)
  • Re: yet another ESR meter thread
    ... They all give slightly different readings but are close. ... dedicated ESR testers? ... "Normal ESR limits vary between aluminum and tantalum types and their ... ESR on electrolytic capacitors ...
    (sci.electronics.repair)
Quantcast