[TechAssist] Toshiba 27A51 dead
- From: walter wood <wwood_38478@xxxxxxxxx>
- To: Tech Assist <techassist@xxxxxxxxxxxxx>
- Date: Thu, 7 Aug 2003 08:48:45 -0700 (PDT)
> Haven't found any flow charts or theory on this
> one.
> Likely Toshiba didn't build it anyway.
>
> DEAD, nothin' at all when power is pushed.
> Lightning likely, but nothing burned and fuse
> good.
On primary side
> IC501
> pin 1 167vdc
> 2 0
> 3 0
> 4 12 to 14vdc
> 5 0
On secondary side
> D 514 2.1 to 2.5vdc
> D 511 0 to 0.6
> D 512 4 to 5
> D 510 86 to 91
> D 505 0
> D 509 30
>
> I'm having a hard time deciding if the Scan and
> Data lines are being pulled down, as it looks
> like
> the 5 volts isn't being developed in the first
> place.
Anyone seen one of these before?
> Ideas??
> Starting place??
> By the way, the 167 volts remains even when the
> set
> is unplugged.
> perhaps something open in the primary?/
> Walter
=====
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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