[TechAssist] Re: SANYO AVM2568C Print (Video Problem)!! Sams #4298
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 9 Jan 2004 17:03:40 -0500
Yes the 33 volt is their. This voltage is developed using a 33 volt zenier
with no dropping resistor at the voltage source. If I lift the link from the
source voltage to the diode it shows 127 volts from the power supply side.
The load from the 33 volt must drop in the tuner and kept constant by the
external zenier diode..
I did change the small transformer as suggested and it can be adjusted
better, will order a new T151 and hope it solves the problem. I will get
back to you and let you know,
thanks for the help,
Bruce.
----- Original Message -----
From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 09, 2004 3:39 PM
Subject: [TechAssist] Re: SANYO AVM2568C Print (Video Problem)!! Sams #4298
> Bruce,
> Didn't ask if the 33 volt tuner supply was "there". I had one of these
fool
> me because I too measure 33 volts at the tuner so I went nuts, only later
to
> discover the darn resistor was open. Don't ask me how that 33 volts got
> there but that took care of the problem. Better check it with one side
> lifted to be sure!
>
> Bob Waterman, CET® #RI-28
> Master Technician License #9109
> Service Manager / Parts Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxxxxxxx
> geminitv@xxxxxxx
> www.geminicomputertvsecurityalarms.com
>
>
> ----- Original Message -----
> From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, January 09, 2004 3:31 PM
> Subject: [TechAssist] Re: SANYO AVM2568C Print (Video Problem)!! Sams
#4298
>
>
> > Thanks Bob, all the voltages are there to tuner, forgot to mention that.
> > Will try the T151 might have a Sanyo Chassis here I can try one from.
> > Bruce.
> >
> >
> > ----- Original Message -----
> > From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, January 09, 2004 2:39 PM
> > Subject: [TechAssist] Re: SANYO AVM2568C Print (Video Problem)!! Sams
> #4298
> >
> >
> > > ---------------------------------------------------------------
> > > Text pasted from WinSTIPS 2.0
> > > http://www.ServiceSoftware.com
> > > ---------------------------------------------------------------
> > >
> > > SANYO AVM2567
> > >
> > > Video Goes Into Oscillations After Set Warm
> > >
> > > Mcgregor Tv Service
> > >
> > > May Do This When Changing Channels
> > > Fix Was T151 Part # 6450005206
> > >
> > > ---------------------------------------------------------------
> > >
> > > Also see if the B+ supply resistor is open to the tuner.
> > >
> > > Bob Waterman, CET® #RI-28
> > > Master Technician License #9109
> > > Service Manager / Parts Manager
> > > Gemini Computer, TV, & Security Alarms
> > > (508)695-7302
> > > (508)695-7769 FAX
> > > geminitv@xxxxxxxxxxxxxxxx
> > > geminitv@xxxxxxx
> > > www.geminicomputertvsecurityalarms.com
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, January 09, 2004 2:33 PM
> > > Subject: [TechAssist] SANYO AVM2568C Print (Video Problem)!! Sams
#4298
> > >
> > >
> > > > Schematic or trouble shooting help needed!
> > > > No Picture , looks like a AGC type problem. When the channel is
> changed
> > > the
> > > > picture will be off frequency then go black like video overload. If
I
> > > inject
> > > > a signal at tuner and reduce the signal strength the picture will
come
> > in
> > > > but will be snowy. If I increase the signal strength will loose the
> > > picture
> > > > again.
> > > > Can any share a schematic of video section. I did change the tuner
but
> > > same
> > > > condition. This set uses a LA76170 jungle I.C.
> > > > Sams #4298 thought I would check the list before ordering print.
> > > > thanks
> > > > Bruce.
> > > >
> > > > B&T Electronics
> > > > 139 Margaret St
> > > > Sarnia Ontario
> > > > Canada
> > > > N7T 2Y3
> > > > 519 344 1850
> > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > ---
> > > > Jokes, complaints, off topics, general chat. Everything other than
> > repair
> > > > help problems can be found at this new list. No archives and posts
> will
> > > not
> > > > be found on Google or any other engine!To remove or join, email
> > > > chat-request@xxxxxxxxxxxxxxx with remove or join as the subject.
> > > > Send to the list at chat@xxxxxxxxxxxxxxx once subscribed.
> > >
> >
>
> --------------------------------------------------------------------------
> > > ---
> > > > Lost Password:
> > > > http://www.tech-assist.org and select "Login Problems?".
> > > > Email Archives:
> > > > //www.freelists.org/archives/techassist/
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > ---
> > > Jokes, complaints, off topics, general chat. Everything other than
> repair
> > > help problems can be found at this new list. No archives and posts
will
> > not
> > > be found on Google or any other engine!To remove or join, email
> > > chat-request@xxxxxxxxxxxxxxx with remove or join as the subject.
> > > Send to the list at chat@xxxxxxxxxxxxxxx once subscribed.
> >
>
> --------------------------------------------------------------------------
> > ---
> > > Lost Password:
> > > http://www.tech-assist.org and select "Login Problems?".
> > > Email Archives:
> > > //www.freelists.org/archives/techassist/
> >
> >
>
> --------------------------------------------------------------------------
> ---
> > Jokes, complaints, off topics, general chat. Everything other than
repair
> > help problems can be found at this new list. No archives and posts will
> not
> > be found on Google or any other engine!To remove or join, email
> > chat-request@xxxxxxxxxxxxxxx with remove or join as the subject.
> > Send to the list at chat@xxxxxxxxxxxxxxx once subscribed.
>
> --------------------------------------------------------------------------
> ---
> > Lost Password:
> > http://www.tech-assist.org and select "Login Problems?".
> > Email Archives:
> > //www.freelists.org/archives/techassist/
> >
>
> --------------------------------------------------------------------------
---
> Jokes, complaints, off topics, general chat. Everything other than repair
> help problems can be found at this new list. No archives and posts will
not
> be found on Google or any other engine!To remove or join, email
> chat-request@xxxxxxxxxxxxxxx with remove or join as the subject.
> Send to the list at chat@xxxxxxxxxxxxxxx once subscribed.
> --------------------------------------------------------------------------
---
> Lost Password:
> http://www.tech-assist.org and select "Login Problems?".
> Email Archives:
> //www.freelists.org/archives/techassist/
>
-----------------------------------------------------------------------------
Jokes, complaints, off topics, general chat. Everything other than repair
help problems can be found at this new list. No archives and posts will not
be found on Google or any other engine!To remove or join, email
chat-request@xxxxxxxxxxxxxxx with remove or join as the subject.
Send to the list at chat@xxxxxxxxxxxxxxx once subscribed.
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
