[TechAssist] Re: Does how a HOT shorts tell you where the problem is?
- From: walter wood <wwood_38478@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 26 Sep 2002 06:51:08 -0700 (PDT)
I've never even thought of your question. Most read
low resistance emitter to base anyway, because of
the damper diode and resistor built in.
I do believe that near 100% of hot failures are
caused by one of two things.
Of course, bad flyback.
But the main cause I see is loss of drive caused by
the poor job that the wave solder machines do on
the thermal plane around the horiz. drive
transformer.
Machines work cheap, but they can't produce a
quality product.
Walter
--- kevinstv <kevinstv@xxxxxxx> wrote:
> General question: If the horizontal output
> transistor (HOT) has all 3 leads shorted, or is
> shorted B to C, or is shorted B to E, or is
> shorted C to E--do any of these differences tell
> you where to look for the fault?
>
> I repair both TV's as well as computer monitors
> so this info would be helpful. Most HOT's tend
> to be dead shorts to all three pins, but
> sometimes they short only partially. Thankyou.
>
> Kevin Wilks
> Kevin's TV and Video Repair
> Penticton BC Canada
> kevinstv@xxxxxxx
>
>
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=====
Walter Wood
Future Tech Home Center
2786 Hwy. 43 N.
Lawrenceburg Tn. 38464
931-829-3337
Fax 931-829-4044
mailto:wwood_38478@xxxxxxxxx
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