[TechAssist] Re: AC head adj.
- From: Dennis Viereck <wa6ati@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 22 Nov 2001 09:32:37 -0800
Ray
In your response you made reference to a specific tape, "Must be an
optically recorded tape " I have never heard of this type of tape. What is it?
My understanding of video tape is that it is 100% magnetic media. How does
optics play into this?
I understand that the magnetic footprint placed on the tape must match a VHS
standard. That is why the master must be recorded accurately to make all VHS
machines compatible to the VHS standard.
Dennis Viereck
Ray Lufkin wrote:
> To adjust a/c head find the control track pulse usually around the servo
> multi monostable area. Find it with your scope and adjust ac head height
> (big screww on thread) using the big screw for maximum control track pulse
> amplitude. Then adjust azimuth for crisp audio. Use a high quality new
> pre-recorded movie tape not one recorded on another vcr. Must be an
> optically recorded tape or it will have ac error already on it.sAll
> adjustments should be very close to start with so if you have to crank them
> something is wrong. Alot times it's a bad pinch roller crushing and pulling
> the tape off the phsical track of the head. Best way to test for that is see
> how the tape path looks in search modes.Watch tape path closely and go in
> forward/reverse tape search and look for crinklies. Been working on vcr's
> since 1981.
>
> ----- Original Message -----
> From: "Tel-Tek Electronics" <teltek@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, November 22, 2001 11:04 AM
> Subject: [TechAssist] Re: Older RCA VCR PSVR60
>
> >
> > Haven't adjusted them.
> > I like to leave them alone, especially in stereo/hifi sets.
> > But may have to, as a last resort.
> >
> > -Ed-
> >
> > teltek@xxxxxxxxxxx
> > TEL-TEK ELECTRONICS.
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, November 22, 2001 10:31 AM
> > Subject: [TechAssist] Re: Older RCA VCR PSVR60
> >
> >
> > >
> > > There are two or three screws at the base of the Ac heads.
> > > Do not adjust them too far. If you do, it could take a lot of time to
> get
> > > the audio tracking close to what it was originally.
> > > You use the adjustments for the head tilt and azimuth
> > >
> > > Jeff
> > > mailto:Jeff@xxxxxxxxxxxxxxxxxx www.9-11-2001tragedy.com
> > > FAX 1-413-280-0677
> > > Intrepid Video & Electronics
> > > Harrisburg, PA 17111
> > > 717-909-8844
> > > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> > > ----- Original Message -----
> > > From: "Shaun" <ssroark@xxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, November 22, 2001 12:07 AM
> > > Subject: [TechAssist] Re: Older RCA VCR PSVR60
> > >
> > >
> > > >
> > > > do you know how to adjust the audio head?
> > > > ----- Original Message -----
> > > > From: "Tel-Tek Electronics" <teltek@xxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Wednesday, November 21, 2001 11:22 AM
> > > > Subject: [TechAssist] Re: Older RCA VCR PSVR60
> > > >
> > > >
> > > > >
> > > > > It's Stereo/HiFi, cleaned all the heads..no go.
> > > > >
> > > > > -Ed-
> > > > > teltek@xxxxxxxxxxx
> > > > > TEL-TEK ELECTRONICS.
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Wednesday, November 21, 2001 11:16 AM
> > > > > Subject: [TechAssist] Re: Older RCA VCR PSVR60
> > > > >
> > > > >
> > > > > >
> > > > > > Did you clean control/audio head?? Head could be bad or is this a
> > HI
> > > FI
> > > > > > audio unit with audio heads on Video head drum, If so try
> cleaning
> > > the
> > > > > > head assy .
> > > > > > Phillip R Hull
> > > > > > phil245@xxxxxxxxxxxxx
> > > > > > ----- Original Message -----
> > > > > > From: "Tel-Tek Electronics" <teltek@xxxxxxxxxxx>
> > > > > > To: "AAAA TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Wednesday, November 21, 2001 11:07 AM
> > > > > > Subject: [TechAssist] Older RCA VCR PSVR60
> > > > > >
> > > > > >
> > > > > > >
> > > > > > > Model PSVR60
> > > > > > >
> > > > > > > Have a VCR here that came in with no sound.
> > > > > > > Found a module that looks very similar to the Sony SBX1637-11,
> > which
> > > I
> > > > > > > replaced. Brought the low volume back from tuner.
> > > > > > > But when tape is played, the audio sounds a little raspy, almost
> > > like
> > > > > > > cracked speaker.
> > > > > > > My question....is this module replaceable with the SBX1637-11,
> or
> > am
> > > I
> > > > > > > looking for more sound problems.
> > > > > > > This is an older VCR, 10 years, approx.
> > > > > > >
> > > > > > > TIA.
> > > > > > >
> > > > > > > -Ed-
> > > > > > >
> > > > > > > teltek@xxxxxxxxxxx
> > > > > > > TEL-TEK ELECTRONICS.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > =================================
> > > > > > > Help make your TechAssist database better!
> > > > > > > Submit your fixes here:
> > http://circuitwork.com/techassist/tip/#tips
> > > > > > > =================================
> > > > > > > To UNSUBSCRIBE your email address, click here:
> > > > > > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
> > > > > > >
> > > > > > >
> > > > > >
> > > > > > =================================
> > > > > > Help make your TechAssist database better!
> > > > > > Submit your fixes here:
> http://circuitwork.com/techassist/tip/#tips
> > > > > > =================================
> > > > > > To UNSUBSCRIBE your email address, click here:
> > > > > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > > =================================
> > > > > Help make your TechAssist database better!
> > > > > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips
> > > > > =================================
> > > > > To UNSUBSCRIBE your email address, click here:
> > > > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
> > > > >
> > > >
> > > > =================================
> > > > Help make your TechAssist database better!
> > > > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips
> > > > =================================
> > > > To UNSUBSCRIBE your email address, click here:
> > > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
> > > >
> > > >
> > >
> > > =================================
> > > Help make your TechAssist database better!
> > > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips
> > > =================================
> > > To UNSUBSCRIBE your email address, click here:
> > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
> > >
> >
> > =================================
> > Help make your TechAssist database better!
> > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips
> > =================================
> > To UNSUBSCRIBE your email address, click here:
> > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
> >
>
> =================================
> Help make your TechAssist database better!
> Submit your fixes here: http://circuitwork.com/techassist/tip/#tips
> =================================
> To UNSUBSCRIBE your email address, click here:
> mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
=================================
Help make your TechAssist database better!
Submit your fixes here: http://circuitwork.com/techassist/tip/#tips
=================================
To UNSUBSCRIBE your email address, click here:
mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
Other related posts:
