[TechAssist] Re: [TechAssit] Citizen TV JCTV3034 - Relay Click
- From: "David Lessard" <mrfixit@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 24 Dec 2002 12:09:03 -0500
No I don't have the schematic for this set. These voltages, are they derived
from the flyback, if this is the case then of course the shut down ciruit is
working because I have the +B disconnected from the HOT. Do you have the
ability to scan and send the section in question?
Any help would be appreciated.
Thanks.
David.
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Wilfred Blakey
Sent: Tuesday, December 24, 2002 11:54 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: [TechAssit] Citizen TV JCTV3034 - Relay Click
I just looked at the schematic for this tv and saw the two transistors you
mentioned. I t looks like they make up a shut down circuit monitoring the
vcc for the audio and the video outputs on the crt neck board. When either
voltage quits, the diode D631/632 conduct shutting down the main relay.
Do you have the schematic for this set?
Blakey TV
Kirkland Lake,Ont.,Canada
----- Original Message -----
From: "Jeff Dougherty" <support@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, December 23, 2002 11:03 PM
Subject: [TechAssist] Re: [TechAssit] Citizen TV JCTV3034 - Relay Click
Dave,
I can't help you with that, I've never worked on this brand....just trying
to help
from my database.
It has been my experience...don't be too picky about the wording. Depending
on the
value of the part and how far of it is, the symptoms may be slightly
different.
support@xxxxxxxxxxxxxxxxxx
FAX 717-564-4952
Jeff Dougherty
Intrepid Video & Electronics Be careful of your thoughts.
501 Luther Rd They may become your words
Harrisburg, PA 17111 any moment.
717-909-8844
VCR tips, electronics info & general interest.
www.intrepid-video.com www.tech-repair.net
www.thetoolcaddy.com www.9-11-2001tragedy.com
***********************************************************************
----- Original Message -----
From: "David Lessard" <mrfixit@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, December 23, 2002 10:24 AM
Subject: [TechAssist] Re: [TechAssit] Citizen TV JCTV3034 - Relay Click
Hey Jeff,
Thanks but the problem occurs instantly, not after a few minutes. What I
really need to know is the function of Q631 & Q632 and how it affects the
relay circuit. When I disconnect the emitter of Q631 I can turn the relay on
and off. I have not hooked the HOT back to +B. Need to solve one problem at
a time.
Season's Greetings All!
David Lessard
mrfixit@xxxxxxxxxxx
Alexandria, Ontario
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Jeff Dougherty
Sent: Monday, December 23, 2002 8:57 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: [TechAssit] Citizen TV JCTV3034 - Relay Click
David,
This model number is different, but perhaps will help:
>From Tech Repair CD:
CITIZEN\JCTV1579\SHUTS DOWN AFTER A FEW MINUTES\\\\LEAKY Q602(2SD1409) CAN
USE
ECG2540\\\\\\\\
support@xxxxxxxxxxxxxxxxxx
FAX 717-564-4952
Jeff Dougherty
Intrepid Video & Electronics Be careful of your thoughts.
501 Luther Rd They may become your words
Harrisburg, PA 17111 any moment.
717-909-8844
VCR tips, electronics info & general interest.
www.intrepid-video.com www.tech-repair.net
www.thetoolcaddy.com www.9-11-2001tragedy.com
***********************************************************************
----- Original Message -----
From: "David Lessard" <mrfixit@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, December 23, 2002 12:31 AM
Subject: [TechAssist] [TechAssit] Citizen TV JCTV3034 - Relay Click
Techs,
Push the "ON" button and only a relay clicking, on then off immediately,
pushing again does nothing, pushing again does the same relay clicking
thing. Found shorted C553 (.33uf/200V) in horizontal circuit (replaced). HOT
is OK. Found Q606 (C-E shorted) in +B regulator circuit, replaced. Found
baked E-Cap C502 near vertical output heatsink, replaced.
Any thoughts? I'm going to seperate and load down (light bulb) the +B to
confirm regulation, if OK I'm tempted to bypass the relay and slowly crank
up the AC while monitoring the current (+B inline with light bulb). Should I
do this? Any suggestions would greatly be appreciated.
Thank-you.
"Share what you know, Learn what you don't"
David Lessard
Alexandria Electronics
50 Harrison Street
Alexandria, Ontario
K0C-1A0
mrfixit@xxxxxxxxxxx
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