[TechAssist] Re: RCA G27666AT / CTC187BH after unplugged hours,hard to turn on again
- From: "Jerry" <geiting@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 5 Dec 2003 22:59:37 -0500
Phil,
There isn't a separate standby supply in this set, the main supply
should be up and running anytime it's plugged in, and it has very little
reliance on electrolytic caps (though the main filter could be going bad
causing erratic operation of the supply). I can get you a diagram of it if
you need it.
Jerry Eiting
Christians Electronic Service
Piqua, Ohio
----- Original Message -----
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, December 05, 2003 10:09 PM
Subject: [TechAssist] Re: RCA G27666AT / CTC187BH after unplugged hours,hard
to turn on again
| I does have a meg resistor. I was thinking an electrolytic possibly in
| the standby supply being borderline,and unplugging it allows it to
| completely discharge, but these sort of things are really hard to nail
| down.
| Phil
|
| Jerry wrote:
| >
| > Phil,
| > There is a high value (I think it's a 1.5Meg 1/4watt) resistor in
the
| > primary circuit of the STK730 that starts the regulator when 1st plugged
| > in.. It may be up in value or open.
| >
| > Jerry Eiting
| > Christians Electronic Service
| > Piqua, Ohio
| >
| > ----- Original Message -----
| > From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
| > To: <techassist@xxxxxxxxxxxxx>
| > Sent: Friday, December 05, 2003 9:19 PM
| > Subject: [TechAssist] RCA G27666AT / CTC187BH after unplugged hours,
hard to
| > turn on again
| >
| > | CTC187BH chassis console.
| > | The customer claims if the house power goes off for a few hours, or if
| > | unplugged for a few hours, then plugged in again, it usually will not
| > | power on again, sometimes for months.
| > | I was suspecting something in the standby voltages. This set uses an
| > | STK730-010 based smps.
| > | Any histories on this strange symptom?
| > | Kinda hard to troubleshoot...
| > | Phil Bader
| > | --
| > | Philip Bader
| > | Jan Phyl TV Inc. (estab. 1976)
| > | 3420 Recker Hwy. Winter Haven, Fl. 33880
| > | Fax (863) 299-8821
| > | email: tjanphyl@xxxxxxxxxxxxxxx
| > |
| > |
| >
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|
| --
| Philip Bader
| Jan Phyl TV Inc. (estab. 1976)
| 3420 Recker Hwy. Winter Haven, Fl. 33880
| Fax (863) 299-8821
| email: tjanphyl@xxxxxxxxxxxxxxx
|
|
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