Re: Help - RCA CTC169CA Fuse Troubleshooting

From: Arnold stewart (arnold.stewart_at_sympatico.ca)
Date: 02/07/05 

Date: Mon, 07 Feb 2005 15:28:18 -0500

Remove the HOT. If the B-E still mesures .4 ohms in both directions,
it's shorted. Normally reads between 15 - 30 ohms or more.

Newbie wrote:
> I'm hoping somebody can help me with this TV set. I am new to
> electronics repair and have read quite a bit on the net but the
> recommendations are fairly generic.
>
> This set blows the fuse instantly upon applying power. I have checked
> the board for hairline cracks with no avail (at least to my eyes). I
> believe I have verified everything up to the HOT (Q4401), but anything
> is possible for a newbie. The HOT is high on C-E in both directions,
> but on B-E it reads 0.4 ohms in both directions (on 200 ohm DMM scale).
> Does this mean the HOT is bad? If so, what are the next steps (I do
> not want to simply replace the HOT and see if it happens again, which
> I've been told previously).
>
> Thanks in advance for any help!
>

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