[TechAssist] Re: Sony KV20M42 Dead
- From: "D Panday" <dpanday@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 02 Jan 2003 17:36:29 -0500
Pin8 of IC002 is your output.
If pin 8 is lift out of the cct and the voltage is 2.7v.
You have a bad IC002.
Panday
>From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Sony KV20M42 Dead
>Date: Thu, 02 Jan 2003 22:13:58 +0000
>
>
>Removing pin 27 doesn't help and lifting pin 8 of IC002 removes voltage
>from
>board but on chip stays at 2.6v out 7.x V in
>
>Peter
>Tucson Radio
>
>
>
>
>
>
>From: "D Panday" <dpanday@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Sony KV20M42 Dead
>Date: Thu, 02 Jan 2003 16:21:54 -0500
>
>
>Peter,
>
>Ic002 pins are:
>PINS. VOLTAGE.
>1 7.5V
>2 N/C
>3
>4 N/C
>5 GND
>6 RESET
>7 N/C
>8 5V STBY 5.
>
>IC001 CPU pin 27 is VCC +5v, try unsolder that pin.
>I had a few occasion that IC002 failures'.
>Good Luck.
>Panday
>
>
>
>
>
>
> >From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
> >Reply-To: techassist@xxxxxxxxxxxxx
> >To: techassist@xxxxxxxxxxxxx
> >Subject: [TechAssist] Sony KV20M42 Dead
> >Date: Thu, 02 Jan 2003 20:05:01 +0000
> >
> >
> >Sony KV20M42
> >Chassis BA-4D
> >Sams 4268
> >
> >Dead set low standby 5V only 2.6V supply of 7.8 V ok subbing in fixed
>reg
> >5v
> >doesn't help (reset ?)
> >pull output pin of standyby reg IC002 it is still 2.6V
> >I suspect that IC002 is bad and/ or a bad cpu was going to try the IC
> >I don't have the schematic if someone has an electronic copy let me know
> >it is a surfacemount JRC part with R05B on it. After a little research I
> >suspect from those markings it is NJM78LR05BM, the data sheet apears
> >consistant from what circut I can disern. A 8 pin 5 volt surfacemount
> >regulator with reset. sony # ? the generic is proving a little dificult
>to
> >find. Has anyone come accros this failure?
> >
> >Peter Oliver
> >Tucson Radio TV
> >
> >
> >
> >
> >
> >_________________________________________________________________
> >MSN 8: advanced junk mail protection and 2 months FREE*.
> >http://join.msn.com/?page=features/junkmail
> >
> >------------------------------------------
> >Submit A Repair Tip For Everyone Here:
> >http://www.tech-assist.org/secure/tip/main.html
> >------------------------------------------
> >To REMOVE your email address, click here:
> > http://www.tech-assist.org/unsubb.html
> >To CHANGE your email address, click here:
> > http://www.techassist.net/forms/change.html
>
>
>_________________________________________________________________
>MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*
>http://join.msn.com/?page=features/virus
>
>------------------------------------------
>Submit A Repair Tip For Everyone Here:
>http://www.tech-assist.org/secure/tip/main.html
>------------------------------------------
>To REMOVE your email address, click here:
> http://www.tech-assist.org/unsubb.html
>To CHANGE your email address, click here:
> http://www.techassist.net/forms/change.html
>
>
>_________________________________________________________________
>MSN 8 with e-mail virus protection service: 2 months FREE*
>http://join.msn.com/?page=features/virus
>
>------------------------------------------
>Submit A Repair Tip For Everyone Here:
>http://www.tech-assist.org/secure/tip/main.html
>------------------------------------------
>To REMOVE your email address, click here:
> http://www.tech-assist.org/unsubb.html
>To CHANGE your email address, click here:
> http://www.techassist.net/forms/change.html
_________________________________________________________________
MSN 8: advanced junk mail protection and 2 months FREE*.
http://join.msn.com/?page=features/junkmail
------------------------------------------
Submit A Repair Tip For Everyone Here:
http://www.tech-assist.org/secure/tip/main.html
------------------------------------------
To REMOVE your email address, click here:
http://www.tech-assist.org/unsubb.html
To CHANGE your email address, click here:
http://www.techassist.net/forms/change.html
Other related posts:
