[TechAssist] Re: Symphonic SC3819 TV/VCR Combo-dead
- From: Jeff Dougherty <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 27 Aug 2003 22:30:06 -0400
Mike,
>From Tech Repair CD:
SYMPHONIC\SC3819\SHUTS DOWN- HV COMES ON FOR AN INSTANT- P/S OK\\\\R545(5.6)-
IC541(LA7837-ECG7104)\\\\\\\\\
--
Jeff
Intrepid Video TV/VCR Repair
263 S Front St
Steelton PA 17113
Fax: 717 564 495 2
www.intrepid-video.com www.tech-repair.net
On Wed, 27 Aug 2003 17:31:36 -0600, Mike Jensen,
soundpromikej@xxxxxxxxxxx wrote:
> Hi Techs,
> I have a Symphonic SC3819 TV/VCR combo causing me grief. Originally
> had a shuts down after warm up symptom. After running on bench it
> developed a dead symptom. I replaced all SMPS electrolytics and
> unit began working-test ran for two days-customer picked up and
> brought back two weeks later with dead symptom. Now the SMPS keeps
> trying to start up (front panel led flickers as unit keeps trting
> to power up along with audible pops in the speaker). Have replaced
> vertical output, all secondary electrolytics, switching
> transistor(2SC4508), rang switching transformer, replaced film caps
> in switch oscillator circuit. I'm working without a schematic; if
> anyone has a chematic or any tips it would be greatly appreciated.
> Mike Jensen
> Sound Pro
> Rapid City, SD
> Fax:605-348-2252
> soundpromikej@xxxxxxxxxxx
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