Prev: Crate BV150H tube/valve amp
Next: FS: NEW Minicircuits ZKL-1R5 RF MICROWAVE AMPLIFIER(s) 0.01-1.5GHz. $50 on Ebay (LOT of TEN)
From: powerampfreak on 2 Nov 2009 00:07
On 30 Okt, 19:57, b <reverend_rog...(a)yahoo.com> wrote:
> On 30 oct, 18:09, powerampfreak <powerampfr...(a)hotmail.com> wrote:
>
> > So - if it works OK to record SP and play it on the same machine, then
> > upper cylinder must be good, right?
> > If a SP recording doesn't play ok on the same machine but on another
> > machine .. what could then be the problem?
> > There are the same heads used for both rec and play, right?
>
> If it records and then plays back (SP) well on any machine, same or
> different, then the heads are likely OK and there is some other
> problem. However, I'm betting that two of the heads are badly clogged
> or damaged. Seen this often. Two heads are used for SP rec and PB, and
> another two for LP rec and PB, the reason for more heads for each
> speed is the difference in microns of the head gap being crucial for
> better reproduction at different speeds.
>
>  In fast wind, slo-mo etc, the other pair are probably used, which is
> why you get more picture.
> read up on this here:http://www.repairfaq.org/REPAIR/F_vcrfaqb.html#VCRFAQB_015
>
> HTH
> -B

Thanks for the replies.
If I need to change the upper cylinder of this machine. Is it a simple
enough task to do?
Does it require any special tools, etc? Or access to the service
manual for alignment in any way?
I've replaced the upper cylinder in earlier days on some older
Panasonics.
I remember then the job was quite simple, but it was like 5-6 years
ago. Don't know one newer machines.

regards
Jackson
First  |  Prev  | 
Pages: 1 2
Prev: Crate BV150H tube/valve amp
Next: FS: NEW Minicircuits ZKL-1R5 RF MICROWAVE AMPLIFIER(s) 0.01-1.5GHz. $50 on Ebay (LOT of TEN)