Re: Sylvaina 27 inch Tv Won't power up..

I found the repairfaq.org tv page. It looks quite useful, but we will see if
I can fix this thing..

- Mike

"Michael Kennedy" <Mikek400@xxxxxxxxxxxxxx> wrote in message
news:oeOdnWXGPrLHBjffRVn-pw@xxxxxxxxxxxxxx
>I know what not to touch inside a tv. I've read up on crt safety in the
>past because I have had a few projects where I had to remove a tv from its
>case and mount the crt in a fixture. I know how to ground the crt tube and
>caps. My biggest problem is finding the bad component. Would you suggest
>replacing all of the caps in the power supply section of the chasis? You
>said a short in the power supply sounds like a possible problem, could I
>check the caps with a ohm meter and just replace whichever one is bad?
>
> One thing I just remembered. This tv gave me trouble (doing the same
> thing) in the past and if it were upside down it would work. So I assumed
> that there was a cold solder joint somewhere. I thought I had fixed it
> because the solder was cracked on a large capicator and I reflowed it. It
> worked fine for a few weeks. Then it started working some times and not
> others. A good whack used to fix it. I havn't used the tv in a while but
> the problem started again and now it just won't power on at all no matter
> how much you hit it.
>
> I think I will check for shorted out capicators with the good ole ohm
> meter and look to see if that cap came loose again. I'm not sure that was
> the problem to begin with, but the solder was cracked on it.
>
>
> "William R. Walsh" <newgroups1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
> message news:vlwqe.36030$x96.1902@xxxxxxxxxxxx
>> Hi!
>>
>> Something in your TV is shorted or the regulation in the power supply has
>> become faulty.
>>
>> What you are seeing (and hearing) is the power supply attempting to come
>> up
>> and then shut down again. Normally this happens when the outputs of the
>> supply are shorted or even overloaded. Since you mentioned seeing channel
>> numbers flicker on and off on the set, it is very possible that the power
>> supply itself is where the fault lies and that the rest of the set is
>> fine.
>> As a wild guess, I would say that bad capacitors in the power supply are
>> likely.
>>
>> If you don't know where to start and you want to have the TV fixed, then
>> it
>> might be advisable to take it to a shop and get an estimate on repair.
>> Provided the TV was working well prior to its failure the cost of repair
>> may
>> be worth it. If you want to learn to repair electronics, I wouldn't start
>> with a TV set. There is just too much inside that can give you a nasty
>> surprise or even ruin the whole day (and a lot more) if you don't know
>> what's all going on in there.
>>
>> William
>>
>>
>
>


.

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