[TechAssist] Re: RCA 27" TV - CTC167CS - Dead After Storm
- From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 29 Jun 2005 13:14:50 -0400
Wayne, I sent a private email in response to my mailing address,
thank-you. BTW your webpage is down, I get - The page cannot be
displayed -
David Lessard
Mr_fixit@xxxxxxxxxxxx
Alexandria, Ontario, Canada
K0C-1A0
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Wayne Vanaman
Sent: Wednesday, June 29, 2005 12:19 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: RCA 27" TV - CTC167CS - Dead After Storm
David:
I have one in an open RCA bag (in anti-static foam), which means it was
probably installed and then uninstalled for whatever reason, so it is
Probably new, but of course now condition unknown.
If you want it tell me where to send it.
Wayne Vanaman
Omega Electronics
6904 W Fairfield Dr
Pensacola, Fl. 32506-3310
Wayne@xxxxxxxxxxxxxxxxxxxxx
WWW.PensacolaTVRepair.Com
850-456-5995 voice
850-458-6369 fax
David Lessard wrote:
> Sorry, forgot to mention it in my previous post, here it is:
>
> 1A66111-01E
> 2 9131
> TCE1991
>
> David Lessard
> Mr_fixit@xxxxxxxxxxxx
> Alexandria, Ontario, Canada
> K0C-1A0
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Old TV Man
> Sent: Tuesday, June 28, 2005 4:45 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: RCA 27" TV - CTC167CS - Dead After Storm
>
> David - Do you have a part # or a number off of the U3101?
>
> Max Bonnell
> Bonnell TV
> Robinson, IL
>
> Sender: techassist-bounce@xxxxxxxxxxxxx From:
> mr_fixit@xxxxxxxxxxxx(David=A0Lessard) Date: Tue, Jun 28, 2005, 3:15pm
> (CDT+1) To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: RCA 27"
> TV - CTC167CS - Dead After Storm Reply=A0to: techassist@xxxxxxxxxxxxx
>
> Thanks for the service manual Eric. Once in hand it was easy to trace
> the problem to U3101 pin 42, Vcc to ground is shorted, no shorts
> anywhere else. Now to find one! Does anyone have a used one kicking
> around? I don't believe this chassis's micro is still available. Of
> course I won't know if anything else is a problem until I get the
micro
> replaced.
> Thanks in advance,
> God bless you all,
>
> David Lessard
> Mr_fixit@xxxxxxxxxxxxx
> Alexandria, Ontario, Canada
> K0C-1A0
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Wayne Vanaman
> Sent: Monday, June 27, 2005 3:48 PM To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: RCA 27" TV - CTC167CS - Dead After Storm
>
> David:
> I don't see the 12V going too many places, but of course the 5V is all
> over the place.
> On the 5V reg q4160e is a coil L3101, this splits the "two" 5V
supplies
> and lifting one end might tell which path the current is following.
The
> SAMS says q4161 has a 29mA current flow, for what that is worth, but
> they don't tell us about the 5V paths.
>
> Wayne Vanaman
> Omega Electronics
> 6904 W Fairfield Dr
> Pensacola, Fl. 32506-3310
> Wayne@xxxxxxxxxxxxxxxxxxxxx
> WWW.PensacolaTVRepair.Com
> 850-456-5995 voice
> 850-458-6369 fax
>
> David Lessard wrote:
> Thanks for the information Wayne. I just noticed that Q4161 gets quite
> hot after just a minute, so I have a short somewhere off this
> transistor, now just to find it. I'll let you know what I find. I may
> have a few more questions before this is all over.
>
> David Lessard
> Mr_fixit@xxxxxxxxxxxx
> Alexandria, Ontario, Canada
> K0C-1A0
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Wayne Vanaman
> Sent: Monday, June 27, 2005 2:53 PM To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: RCA 27" TV - CTC167CS - Dead After Storm
>
> Hi David:
> The on/off command comes from the micro, U3101p18. U3101 pins:
> 18 on/off
> 31-32 crystal
> 33 reset low
> 40 data
> 41 clock
> 42 5v
> The reset pin, 33, is feed by the 12v supply true zener cr3101 with
> r3116 2400 ohms to ground.
> The 12 V supply is sourced by transformer T4601, diodes cr4601-4.
Q4161c
> connects to cr4603/4 cathodes and is 22v. Q4161e is the 12V standby
> source, which also feeds q4160, the 5V standby reg. Q4160e being the
5v
> supply.
> It has been a long time since I have seen one of these, so this is
from
> memory. Looking down at the component side of the board with the tuner
> on your left. Towards the left hand side look for a diode that in
> standby has voltage on the anode but not on the cathode, if so, change
> it.
>
> Wayne Vanaman
> Omega Electronics
> 6904 W Fairfield Dr
> Pensacola, Fl. 32506-3310
> Wayne@xxxxxxxxxxxxxxxxxxxxx
> WWW.PensacolaTVRepair.Com
> 850-456-5995 voice
> 850-458-6369 fax
>
> David Lessard wrote:
> I stand corrected, I measure 11.7VDC at C605. Is this the proper
> voltage
> level? From there 11.7VDC goes over to Q161, off Q161-(E) voltage is
> 7.2VDC. From there the traces get too small for my weak eyes. Which
> pin
> at micro is Vcc? Which pin at micro is relay "ON"?
>
> David Lessard
> Mr_fixit@xxxxxxxxxxxx
> Alexandria, Ontario, Canada
> K0C-1A0
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of David Lessard
> Sent: Monday, June 27, 2005 1:39 PM To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] RCA 27" TV - CTC167CS - Dead After Storm
>
> Gentlemen,
> I can not find my service manual for this older chassis, lent it out
> and
> it never came back. Does anyone have an e-copy they could send along?
> Standby PS is working, 16VDC is present at the bridge rectifier off
> secondary of standby transformer however relay doesn't activate when
> "ON" button is pressed. Where does secondary standby voltage go after
> this, regulator? I've only worked on (3) of these ever before, a
> troubleshooting guide and/or service manual would be greatly
> appreciated.
> Thanks in advance,
>
> David Lessard
> Mr_fixit@xxxxxxxxxxxx
> Alexandria, Ontario, Canada
> K0C-1A0
> ----------------------------------------------
> -----
>
>
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