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

  • From: "Bruce Youmans" <youmans@xxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 8 Jan 2002 12:46:03 -0700


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
> > > > > >
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