[TechAssist] Re: Panasonic CT-36G33CW Chassis-LED313C
- From: "Ed Gaidies" <teltek3@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 24 Jun 2005 06:35:09 -0400
Thanks Jim...I saw that little bugger sitting close to the TAC switches.
I'll try that this morning.
Thanks.
-Ed-
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
teltek@xxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Myers
Sent: Thursday, June 23, 2005 5:03 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Panasonic CT-36G33CW Chassis-LED313C
Hey Ed, before you stomp on that micro too hard there is a simple test
on the G line sets, remove the optical isolator IC801 and see if the set
will turn on. IC801 is used as an OCP device in this chassis and if it
shorts the set will not turn on due to incorrect voltage on the ACTION
key scan pin on the micro. Could be a screwy micro but simple to try
this first. Also check D807 and D806 off the emitter pin of IC801.
********************************
Since 1972 *
Jim Myers *
Telrad Electronics *
Fort Wayne Indiana *
********************************
Ed Gaidies wrote:
> Thanks Phil...
> So what's involved..changing the Micro?
>
> -Ed-
>
> Tel-Tek Electronics
> Ontario-Canada
>
> teltek3@xxxxxxxxxxxx
>
> teltek@xxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Phillip R. Hull
> Sent: Thursday, June 23, 2005 1:19 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Panasonic CT-36G33CW Chassis-LED313C
>
> I had a similar model and it had a shorted" key input" pin on the
Micro.
> It was pin 9 on this micro
> Phillip R Hull STET
> phil245@xxxxxxxxxxxxx
> FAX 517--569-3075
> Professional Technicians only
> ----- Original Message -----
> From: "Ed Gaidies" <teltek3@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, June 23, 2005 1:07 PM
> Subject: [TechAssist] Panasonic CT-36G33CW Chassis-LED313C
>
>
>
>>Need some help on this.
>>Set came in...customer said it was dead. When I plugged it in, I get a
>>relay click, then nothing.
>>
>>Started to take some voltages at the Regulator, and found when I touch
>>on of the pins with my probe, the set will come on and stay on.
>
> Picture
>
>>and sound normal.
>>
>>Now....if I push any of the Tac switches, the menu will come up, and
>>pushing it again the Menu disappears.
>>
>>This is common on all Tac switches..On/off...Volume
>>Up/Down...Channels Up/down. I figured I may have the Windex
>>Syndrome...and the Tac Switch marked Action...measures about 300
>>ohms...all the rest are over 10K +. I pulled the "action" tac switch
>>out, and it's not corroded, checks OK out of circuit. That partial
>
> short
>
>>is still on the board. I guess I need a Manual, if someone has one.
>>
>>Anyone had this problem?
>>
>>TIA
>>
>>-Ed-
>>
>>Tel-Tek Electronics
>>Ontario-Canada
>>
>>teltek3@xxxxxxxxxxxx
>>
>>teltek@xxxxxxxxx
>>
>>
>
>
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