Looking for power supply schematics for a Proview 19" LCD TV

Model # PA-19DK5 I believe, also says 900T on the back as well. I have
12V but no 5 V on power supply, think it might be what I suspect id a
5 volt regulator but part numbers on it do not come up on google. They
are 21A3 and 65U6Z

 

On 2011-06-14 15:45:35 +0200, rryczak1@sympatico.ca said:

Model # PA-19DK5 I believe, also says 900T on the back as well. I have
12V but no 5 V on power supply, think it might be what I suspect id a
5 volt regulator but part numbers on it do not come up on google. They
are 21A3 and 65U6Z

have you checked all the chemicals capacitors with an esr meter ?
you should...

here are schematics to build your own esr meter
http://kripton2035.free.fr/esr-repository.html

regards,

--
---
Kripton

 

[Ian Field]

<rryczak1@sympatico.ca> wrote in message
news:96f57ab2-f6e7-4f35-90ce-1a79269caf32@z37g2000yqb.googlegroups.com...

Model # PA-19DK5 I believe, also says 900T on the back as well. I have
12V but no 5 V on power supply, think it might be what I suspect id a
5 volt regulator but part numbers on it do not come up on google. They
are 21A3 and 65U6Z

Not certain but they might be Sharp part Nos.

 

[Franc Zabkar]

On Tue, 14 Jun 2011 06:45:35 -0700 (PDT), rryczak1@sympatico.ca put
finger to keyboard and composed:

Model # PA-19DK5 I believe, also says 900T on the back as well. I have
12V but no 5 V on power supply, think it might be what I suspect id a
5 volt regulator but part numbers on it do not come up on google. They
are 21A3 and 65U6Z

FWIW, the following repositories of free downloadable service manuals
turned up in my Google searches for Proview:

http://www.bak.ru/app/webroot/files/tech_docs/%c1%fb%f2%ee%e2%e0%ff%20%fd%eb%e5%ea%f2%f0%ee%ed%e8%ea%e0%20(%f1%f5%e5%ec%fb%20%ee%ef%e8%f1%e0%ed%e8%ff%20%e8%ed%f1%f2%f0%f3%ea%f6%e8%e8)/%cc%ee%ed%e8%f2%ee%f0%fb/PROVIEW/

(I tried to create a TinyURL, but got a "not found" error <shrug&gt

http://ftp.qrz.ru/pub/hamradio/schemes/monitors/proview/

http://ns2.xnik.com/Service%20Manuals/

http://vcomtech.net/electronics/

I suspect that "21A3" is a date code. Such formats are used by some
Japanese IC manufacturers. You could compare it against the markings
on other ICs.

Could we see a photo of the relevant section of the PCB?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.