[TechAssist] Re: CTC 187BD2 dead
- From: "Richard Golden d.b.a. Golden Video Repair Center" <reldong@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 6 Jan 2002 21:40:38 -0800
r4104 has 165v in out 1.3v out , then unsoldered u4101 now has 144v out of
r4104, resistor is good, replace u4101 or?
thanks
Richard
----- Original Message -----
From: "Dennis Viereck" <wa6ati@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, January 06, 2002 9:03 PM
Subject: [TechAssist] Re: CTC 187BD2 dead
>
> Assuming U4101(4) is at 0 volts then I would have to check R4104 a 1.5
> meg 1/2 watt resistor. This is the soft start resistor. It may be open
> or something is loading down the input of U4104(4)
>
> Dennis Viereck
>
> Richard Golden wrote:
>
> > CTC187BD2 d.o.a checked common known problems
> > with this chassic everything checks good ohms check
> > etc. replaced cr4106 cr4107,fuse good ,hot qood
> > Q4101( C) +5.99v,Q4301=(C)=0v, U3201 0v on all,
> > r4104 =+165v Q4303=0v, ( regulator #1=+1.5v,
> > 2&3=0v), (r4128= -2v ), U4101 pins (1=-2v),
> > (2=-1.2v), (3=0),(
> > 4=0),(5=+1.5v),(6=+1.5v),7=+.019v),
> > (8=0v), (9=0v), (10=0v), (11&12 =+163v)
> > any help appreciated
> > > Richard
> > >
> > >
> > >
> > >
> > > =====
> > > Richard Golden
> > > Golden Video Repair Center
> > > 1214 e. 6th street
> > > ontario ca. 91764
> > > (909)988-3356
> > >
> > > reldong@xxxxxxxxx
> > >
> > > __________________________________________________
> >
> > =====
> > Richard Golden
> > Golden Video Repair Center
> > 1214 e. 6th street
> > ontario ca. 91764
> > (909)988-3356
> >
> > reldong@xxxxxxxxx
> >
> > __________________________________________________
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