[TechAssist] Re: [Fwd: Zenith SG5749BG (9-754 smps,9-959 main) dead,no +5V stby]
- From: "Keith Trumbla" <ktrumbla@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 10 Jan 2002 20:42:12
Try cap C3407 in smps first 100@35volt[1] 5 volt standby for micro etc
is sourced from IC 6002 3pin reg. near micro
>From: Phil Bader >Reply-To: techassist@xxxxxxxxxxxxx >To:
"techassist@xxxxxxxxxxxxx" >Subject: [TechAssist] [Fwd: Zenith SG5749BG
(9-754 smps,9-959 main) dead,no +5V stby] >Date: Wed, 09 Jan 2002 12:16:21
-0500 >>>>>-------- Original Message -------- >Subject: Zenith SG5749BG
(9-754 smps,9-959 main) dead,no +5V stby >Date: Wed, 09 Jan 2002 12:15:41
-0500 >From: Phil Bader >Organization: Jan Phyl TV Inc. Winter Haven, Fl.
Estab. 1976 >To: "CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx" >>>last month I
recapped both boards of the usual bad blue lytics.A dozen >or so. Customer
said came on with "power failure" warning, now >dead.Cannot turn on. All
fuses OK, has +105VDC at coll of HOT, at some >points on chassis has+33VDC,
+75VDC ,etc. Noticed has no +5VDC standby >on any of the large chips like
micro,the I/R reciever,etc,hence no start >up. I assume the main SMPS is
basically working. Where does the 5V >standby originate? My first starting
place...Thanks. >------------------------------------------ >Help make your
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