[TechAssist] Re: 46" LXI, M#54460 (Philips) mfg.3/88--DEAD

I seem to remember something about a blue flyback.I think the bulletin said
if the flyback was blue to replace it with a updated white one.Can't find
the bulletin.
al marquardt
ampm@xxxxxxx


----- Original Message -----
From: "D Thunhurst" <dthunhurst@xxxxxxx>
To: "techassist" <techassist@xxxxxxxxxxxxx>
Sent: Thursday, August 29, 2002 8:01 PM
Subject: [TechAssist] 46" LXI, M#54460 (Philips) mfg.3/88--DEAD


>
> Hi,
> I have and oldie that is giving me some problems due to the lack of
> familiarity. It is labeled LXI and built by Philips 3/88.
> Found fuse open and Q10 on power supply module 705442-3 shorted.  I also
> found Q10 on deflection module shorted.  I resoldered the usual poor
> connections (including the ones that are black under the solder).  Esr'd
the
> electro's, checked the low value resistors and diodes.  Found nothing else
> bad.  I tried firing the set up by using a light bulb in place of the fuse
> but it would only cause the bulb to flash once and turn off.  I know that
> some of the SMPS's don't work when using that method, so I put a breaker
> instead. Instant trip.... so I'm sure something is drawing too much
current.
> It just will not stay on long enough to get any voltage readings.  I
checked
> all of the supply lines for shorts but didn't find any.  I know some of
> those early Philips sets were noted for bad flybacks but I don't think
this
> one is bad as the horiz. output transistor is good.
> I tried powering up the set with the divider disconnected, also later
tried
> the tubes and yokes undone, as well as disabling the audio circuit.  All
no
> help.
> At last check over on everything again, the Q10's are still good and I am
no
> further along on this beast as I was a few days ago.
> Any help or suggestions greatly appreciated.
> Daryl
> Daryl's TV
> 3310 Dyer St.
> El Paso, TX 79930
> 915-565-9184
> 915-564-1024 Fax
> http://dynacomp.freeyellow.com
>
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