[TechAssist] Re: Zenith SE2517P Chassis 9-707 No audio. Need schematic.
- From: GERALD GANN <alpha21century1234@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 4 Mar 2006 09:14:45 -0800 (PST)
Thanks Russ I have the schematic I went to the St.Louis library and copied
it off a Sam?s.
It?s been playing fine for about 15 hours now with the diodes lifted.
Hell I?m going to leave it that way. Must be some extra quality that Zenith put
in before the name went on.
You could be right about the diodes being leaky, we change that cap even
thou it ERS?d good and it didn?t help.
Jerry
Alpha 21 Electronics
1840 State St.
Granite City, IL 62040
618-452-8620
alpha21century1234@xxxxxxxxxxxxx
John Conti <contitv@xxxxxxxxxxx> wrote: C3418 Will be on the 9-520 module.
John
Conti'sTV
>From: "Hoyt's TV"
>Reply-To: techassist@xxxxxxxxxxxxx
>To:
>Subject: [TechAssist] Re: Zenith SE2517P Chassis 9-707 No audio. Need
>schematic. Date: Sat, 4 Mar 2006 09:54:02 -0500
>
>Gerry, in one of the tips they refer to CX3418 and call it a 470pf
>in the other one they cal lit C3418 and call it the filter for the 18v rail
>
>I don't believe the tips are written by Zenith tech writers. I think they
>are submitted by TV techs in the field.
>I know a lot of TV techs whose spelling accuracy leaves a lot to be
>desired.
>So I tend to think they are one and the same.
>
>Tip also says they are not being biased properly through the diodes and
>claims that C3418 filter was leaky.
>I would suspect leaky diodes, myself.
>
>If you would like a schematic, I can scan the relevant parts and send them
>if I have it.
>
>Russ Hoyt
>Hoyt's TV
>Exeter, NH
>
>
>----- Original Message -----
>From: "GERALD GANN"
>To:
>Sent: Friday, March 03, 2006 4:10 PM
>Subject: [TechAssist] Re: Zenith SE2517P Chassis 9-707 No audio. Need
>schematic.
>
>
> > Russ are you monitoring this if so can you till me where C3418 is.
>We
> > did what the tip said and the audio came back. We found CX3418 an 470uf
>@
> > 50V. Changed that, no help. Why can?t we just leave those diodes
> > disconnected? Audio sounds OK. Thanks
> > Jerry
> > Alpha 21 Electronics
> > 1840 State St.
> > Granite City, IL 62040
> > 618-452-8620
> > alpha21century1234@xxxxxxxxxxxxx
> >
> > Hoyt's TV wrote: From Z-Tips
> >
> > bad 18v supply rail at pin 2 of IC 101 & 201 on 9-599, scope it for
>ripple
> > lift biasing diodes at pin 2 of each IC, if audio comes back may have
> > leaky
> > C3418 filter cap. on 9-520
> >
> >
> > Russ Hoyt
> > Hoyt's TV
> > Exeter, NH
> >
> >
> > ----- Original Message -----
> > From: "GERALD GANN"
> > To:
> > Sent: Saturday, February 25, 2006 5:39 PM
> > Subject: [TechAssist] Zenith SE2517P Chassis 9-707 No audio. Need
> > schematic.
> >
> >
> >> Zenith SE2517P Chassis 9-707 No audio. Need schematic.
> >> Would any one have this oldie in PDF by any chance? Caps checked good
>and
> >> we are getting all the voltages we think we are supposed to get on the
> >> Stereo DEC/Audio Amp 9-599.
> >>
> >>
> >> Jerry
> >> Alpha 21 Electronics
> >> 1840 State St.
> >> Granite City, IL 62040
> >> 618-452-8620
> >> alpha21century1234@xxxxxxxxxxxxx
> >>
> >>
> >>
>-----------------------------------------------------------------------------
> >> This Email List is accessible to the general public through search
> >> engines. Remove: http://www.tech-assist.org/remove.htm
> >> Set Vacation
> >> mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> >> Lost Password: http://www.tech-assist.org and select "Login Problems?".
> >> Email Archives: //www.freelists.org/archives/techassist/
> >>
> >
> >
> >
>-----------------------------------------------------------------------------
> > This Email List is accessible to the general public through search
> > engines. Remove: http://www.tech-assist.org/remove.htm
> > Set Vacation
> > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> > Lost Password: http://www.tech-assist.org and select "Login Problems?".
> > Email Archives: //www.freelists.org/archives/techassist/
> >
> >
> >
> >
>-----------------------------------------------------------------------------
> > This Email List is accessible to the general public through search
> > engines. Remove: http://www.tech-assist.org/remove.htm
> > Set Vacation
> > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> > Lost Password: http://www.tech-assist.org and select "Login Problems?".
> > Email Archives: //www.freelists.org/archives/techassist/
> >
>
>
>-----------------------------------------------------------------------------
>This Email List is accessible to the general public through search engines.
>Remove: http://www.tech-assist.org/remove.htm
>Set Vacation
>mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
>Lost Password: http://www.tech-assist.org and select "Login Problems?".
>Email Archives: //www.freelists.org/archives/techassist/
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
-----------------------------------------------------------------------------
This Email List is accessible to the general public through search engines.
Remove: http://www.tech-assist.org/remove.htm
Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
This Email List is accessible to the general public through search engines.
Remove: http://www.tech-assist.org/remove.htm
Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
Other related posts:
