[TechAssist] Re: magnavox blowing out put transistors
- From: "Chaz" <chaz@xxxxxxxxxxx>
- To: "lloyd wright" <mrwright21@xxxxxxxxxxx>, techassist@xxxxxxxxxxxxx
- Date: Wed, 17 Oct 2001 23:09:19 -0500
With not knowing what specific model you are refering to (and mentally
seeing your circuit board), I am can only take a guess at what to look for
and/or what to try as a "quick check".
One question first comes to mind, though. The HOT you replaced: did the
original have an internal or external "damper". If external, you should
replace
this also when you replace the HOT. I found it safer to replace even if it
shows as being good since it affects the HOT. 2nd, there might be a shorted
capacitor in this circuit. I've even had a bad horiz osc transformer take out
HOTs, though usually just causes video problems. And, of course, don't rule
out possible cold solder joints.
To help rule out the CRT as a possibility, I'd remove the hi-v lead from the
CRT before firing up your board after replacement of the HOT (if you desire to
replace it again). If not already using one, use a variac (or borrow one if
you
can) to slowly bring the set's AC up. It could help in finding circuits not
operating at their designed voltage and/or signal levels while others are.
Probably not much help to your repair, but it might be a starting point??
Chaz
-------
> i replace the out put transistor it was blown i replace it and itblew
> again i change the flyback replace it whith a ecg 2353 the part# 610597
>
> it played about an hour and blew again the output dose not get hot
>
> ----------------------------------------------------------------------------
> Get your FREE download of MSN Explorer at http://explorer.msn.com[1]
>
>
> --- Links ---
> 1 'http://go.msn.com/bql/hmtag_itl_EN.asp'
> Help make your TechAssist online repair tips
> database better! Submit your fixes here:
> http://www.circuitwork.com/techassist/tip/#tips
> To unsubscribe write to:
> techassist-request@xxxxxxxxxxxxx
> with unsubscribe in the subject line.
>
>
Help make your TechAssist online repair tips
database better! Submit your fixes here:
http://www.circuitwork.com/techassist/tip/#tips
To unsubscribe write to:
techassist-request@xxxxxxxxxxxxx
with unsubscribe in the subject line.
Other related posts:
