[TechAssist] Re: Zenith TV SY2551S Main module 9-1584-1 No power
- From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 7 Jan 2003 15:01:47 -0500
Leroy,
Check voltage @ pin 39 of IC6000 +5V also data in from IR on pin 2
of IC6000.. Make sure you have +5V on pin 8 of IC6001 also check
transistor/diodes on keyboard assembly... If everything checks ok, i would
replace IC6001 p/n 221-745-04 eprom... you may have to replace micro, but
eprom lots cheaper for starters.
Bob,
Bobs TV Worcester, ma
woodman1@xxxxxxxx
Main 508-853-1482
Fax 508-853-1480
----- Original Message -----
From: "LeRoy Westlund" <llw@xxxxxxxxxx>
To: "TechAssist" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, January 07, 2003 1:41 PM
Subject: [TechAssist] Zenith TV SY2551S Main module 9-1584-1 No power
>
> Hi members,
> This Zenith TV won't power up. Customer said he received a static
discharge
> when he touched it, to turned it off.
> All my standby voltages, and all fuses are OK.
> If I ground the collector of the turn-on transistor Q3402, set will turn
on,
> and show a white raster, with retrace lines.
> Any suggestions, before I order a Micro-p IC6000, and an Eprom IC6001 ?
> Micro, and Eprom both have their +5 volts Vcc.
> CRT is still good in this set.
>
> Thanks for any suggestions,
> LLW
>
> LeRoy Westlund
> Westlund TV & Electronics " Walk tall,...Walk straight
> 93 North Main and look the world
> Centerfield, UT 84622-0087 right in the eye "
> Ph./Fax 435-528-3822
> mailto:LLW@xxxxxxxxxx
>
>
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