[TechAssist] Re: Sony SL-2500 Beta Dead, Part ID

Bruce the 12v comes from RL1 and is switched.
  Don-- ps I never had any faults with that power
suppy
either.

--- Bruce Youmans <youmans@xxxxxxxx> wrote:
> 
> Jerry,
> 
> There is no 12 volts on the input. Because I'm
> working without a schematic
> I'm not sure there is 12 volts on the input when the
> VCR is in the standby
> (off) mode. Yes, it is possible an electrolytic
> capacitor or two may be bad
> because of the age.. I have checked most of them and
> so far the ESR is good.
> I was also thinking that there may be a ICP or low
> value resistor that has
> opened. This is because everything is inoperative,
> even the clock in the off
> mode. The customer said the VCR was plugged in and
> one day when they went to
> use it everything was dead. I have checked all three
> of the fuses and they
> are OK. There are some voltages on the power supply
> board in various
> locations. Not sure if they are correct. Any other
> thoughts you might have
> are appreciated.
> 
> Bruce
> ----- Original Message -----
> From: J Silverman <greentron@xxxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, January 08, 2002 10:45 AM
> Subject: [TechAssist] Re: Sony SL-2500 Beta Dead,
> Part ID
> 
> 
> >
> > If that IC has 12 volts input, it should have 9
> volts output. If there is
> no
> > 12 volts the problem is elsewhere. I dont recall
> ever having a power
> problem
> > with that model. Considering the age, I would
> think some of the
> electrolytic
> > capacitors may be dried out.
> > Jerry Silverman
> > Greentron Inc
> > 4 Newland Ave
> > Greenville SC 29609
> > 864 232 3889
> > Fax 271 2080
> > mailto:greentron@xxxxxxx
> > ----- Original Message -----
> > From: "Bruce Youmans" <youmans@xxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, January 07, 2002 12:50 PM
> > Subject: [TechAssist] Re: Sony SL-2500 Beta Dead,
> Part ID
> >
> >
> > >
> > > Thanks Jerry.
> > >
> > > I have been trying to repair this VCR without a
> schematic. The part had
> no
> > > information on it. I was hoping that this part
> would be the reason the
> VCR
> > > is dead, has no display, and no function
> operation at all.
> > >
> > > Bruce
> > > Bruce's TV Service
> > > Sierra Vista, Arizona
> > >
> > > ----- Original Message -----
> > > From: J Silverman <greentron@xxxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Monday, January 07, 2002 9:58 AM
> > > Subject: [TechAssist] Re: Sony SL-2500 Beta
> Dead, Part ID
> > >
> > >
> > > >
> > > > That is a 78M08, standard 8 volt, 1/2 amp 3
> terminal voltage
> regulator.
> > > Sony
> > > > 8 759 170 08.
> > > > Jerry Silverman
> > > > Greentron Inc
> > > > 4 Newland Ave
> > > > Greenville SC 29609
> > > > 864 232 3889
> > > > Fax 271 2080
> > > > mailto:greentron@xxxxxxx
> > > > ----- Original Message -----
> > > > From: "Bruce Youmans" <youmans@xxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Sunday, January 06, 2002 10:57 PM
> > > > Subject: [TechAssist] Re: Sony SL-2500 Beta
> Dead, Part ID
> > > >
> > > >
> > > > >
> > > > > Need to know the part number for IC3 on the
> power supply board.
> > > > > This unit is a Sony Sl-2500, but is similar
> to a Zenith VR-9775.
> > > > >
> > > > > Thanks.
> > > > >
> > > > > Bruce
> > > > > Bruce's TV Service
> > > > > Sierra Vista, Arizona
> > > > >
> > > > > ----- Original Message -----
> > > > > From: Bruce Youmans <youmans@xxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Friday, January 04, 2002 9:36 AM
> > > > > Subject: [TechAssist] Re: Sony SL-2500 Beta
> Dead
> > > > >
> > > > >
> > > > > >
> > > > > > Just learned this Sony Beta is similar to
> a Zenith VR9775 in case
> > > anyone
> > > > > has
> > > > > > information on either.
> > > > > >
> > > > > > Thanks
> > > > > >
> > > > > > Bruce
> > > > > > Bruce's TV Service
> > > > > > Sierra Vista, Arizona
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: Bruce Youmans <youmans@xxxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Wednesday, January 02, 2002 10:18 PM
> > > > > > Subject: [TechAssist] Sony SL-2500 Beta
> Dead
> > > > > >
> > > > > >
> > > > > > > Manufacturer: Sony
> > > > > > > Model: SL-2500 Beta VCR
> > > > > > > Symptom: Dead
> > > > > > >
> > > > > > > Received today a Sony Beta VCR for
> repair. Not sure this is
> worth
> > > > > digging
> > > > > > into unless it may be something simple.
> Unit is totally dead. No
> > > display
> > > > > or
> > > > > > any action when the power button is
> pushed. Primary fuse, F1, is
> > fine.
> > > > No
> > > > > > schematic on this one and the unit is
> pretty compact so I hate to
> > dig
> > > > into
> > > > > > it without some advance help. Any help
> would be appreciated.
> > > > > > >
> > > > > > > Bruce
> > > > > > > Bruce's TV Service
> > > > > > > Sierra Vista, Arizona
> > > > > > >
> > > > > > >
> ------------------------------------------
> > > > > > > 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
> > > > > > > Or send a BLANK email with unsubscribe
> in the
> > > > > > > SUBJECT field to the address above.
> > > > > > >
> > > > > > >
> > > > > >
> > > > > > ------------------------------------------
> > > > > > 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
> > > > > > Or send a BLANK email with unsubscribe in
> the
> 
=== message truncated ===


__________________________________________________
Do You Yahoo!?
Send FREE video emails in Yahoo! Mail!
http://promo.yahoo.com/videomail/
------------------------------------------
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
Or send a BLANK email with unsubscribe in the
SUBJECT field to the address above.

Other related posts: