[TechAssist] Re: Panasonic CT-36D20B
- From: MDileo0000@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 9 Dec 2003 08:12:28 EST
Shaun,
It is an avalanche diode, one time use and strictly for damage control. This
one is rated at 180VDC approx. If there is an overvoltage of the 130 volt
line it will short to ground loading the B+ line and forcing the SMPS IC to run
at a much slower switching rate and thus effectively preventing any secondary
power from developing. The SMPS IC has a 330VDC raw input using a 1/2
wave voltage doubler. If this IC were to short and pass 330VDC into the sweep
circuit, there will be several blown components. Failure of the diode can be
caused by line surges at the AC input without damaging anything else.
Dominic DiLeo
Atlantic TV
Freeport, Maine
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In a message dated 12/8/03 11:46:09 PM Eastern Standard Time,
satguy@xxxxxxxxxxxxx writes:
> Thanks that's good information but I am looking for the spec's. Is it a 40
> volt fast recovery stuff like that.
>
> Shaun
> Advanced Electronics
> Fort Morgan, CO 80701
>
> satguy@xxxxxxxxxxxxx
> ----- Original Message -----
> From: <support@xxxxxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, December 08, 2003 7:59 PM
> Subject: [TechAssist] Re: Panasonic CT-36D20B
>
>
> > Shaun,
> > Did you sign up for account at Tritronics?
> > This information is on their site:
> > Item #: TVSSR2KL (HITACHI) INVENTORY AVAILABLE IN FLORIDA
> > FOR IMMEDIATE SHIPMENT
> > you can enter a P.O.#,
> > workorder or notes here -->DIODE, PROTECTION
> >
> > List Price: $1.83 EA
> > INTREPID VIDEO TV/VCR Price: $ 1.23 EA
> >
> >
> > www.tritronicsinc.com
> >
> > Jeff Dougherty
> > Intrepid Video TV/VCR
> > 263 S Front St
> > Steelton PA 17113
> > fax...717-564-4952
> > www.intrepid-video.com www.tech-repair.net
> >
> > ----- Original Message -----
> > From: "Shop" <satguy@xxxxxxxxxxxxx>
> > To: "tech" <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, December 08, 2003 12:31 PM
> > Subject: [TechAssist] Panasonic CT-36D20B
> >
> >
> > Does any one know the value of D825 (TVSSR2KL) I have had 3 tv's in the
> > past week with this protection diode shorted and I am trying to figure
out
> > if there are any other parts that cause this diode to short.
> >
> > Shaun
> >
> > Advanced Electronics
> > 224 West Riverview ave.
> > Fort Morgan, CO 80701
> >
> >
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