Re: National TR-5090A TV schematic needed.

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#418

From: Little Steve
Date: Thu, 21 Sep 2006 08:59

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"Phil Allison" <philallison@tpg.com.au> wrote in message
news:4nf1e0Fa41c3U1@individual.net...
>
> "Bob Parker"
> >
> >   Unfortunately it has the symptoms of a dying laser... skipping and
> > trouble finding tracks. It was great before that happened though.
>
> ** Is the disk draw moving sluggishly ?
> If so, the nylon gear lubricant has gone sticky.
> WD sprayed into the affected areas does wonders.
> Might fix all the symptoms.
> ......  Phil
>
I doubt that the disk drawer is the cause of this problem, more likely it's
either the laser diode going down or a problem with the sled. (I'm assuming
that you've cleaned the lens.) Either too much wear, or bad lubrication. The
first is hard to fix, unless there's a power adjustment trimpot in the
circuit, but if it's only a lack of or sticky lubricant on the sled rails,
re-lubricating could fix it. In the case of Sony Playstations, when the sled
rails are worn, turning the unit upside-down often helps. (No good in this
case)
... Steve

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From: "Little Steve" <Steve@IsHere.com>
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Subject: Re: National TR-5090A TV schematic needed.
Date: Thu, 21 Sep 2006 18:59:20 +1000
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