[TechAssist] Re: Panasonic CT27S2S
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 07 Mar 2005 10:01:13 -0500
I remember reading an email about this so I just scanned for it and
found it. Here is the info:
MDileo0000@xxxxxxx wrote:
The original used is an STK730-020A. These are screened for their fast
slew rate for full turn on and do run hot. The case stamp of the
original will not have an "A" on it or any other mark, but on the
heatsink backplate it will be marked STK730-020B. Stupid system but
true. The current capacity of the non "A" type is the same but will
derate rapidly as the temperature rises and will fail. -030 or -150 will
not hold up for the same reason. Maybe a -050 will work as I was advised
by someone that they were using it reliably. I suspect it will draw more
total current. The original is NLA from Panasonic, still available from
B&D Enterprises and Tritronics and they absolutely are the same as
original. Little chance there is anything else wrong in the circuit it
is installed in.
Dominic DiLeo
Atlantic TV
Freeport, Maine
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
Leonard Caillouet wrote:
> Is there something special about the Panasonic "original" STK730-020? I
> have always used other sources for them and never had a problem. Is there
> any reason not to use the higher powered version of these in the Panasonics?
>
> Leonard Caillouet
> Electronics World
> 1261 NW 76 Blvd
> Gainesville, FL 32606
> 352-332-5608
> FAX 352-332-5668
>
>
> ----- Original Message -----
> From: "Gary McCartney" <gary@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, March 05, 2005 4:27 PM
> Subject: [TechAssist] Re: Panasonic CT27S2S
>
>
> I think those you have use a Panasonic original STK730-020A. Not sure if
> that is the cause of your problem or not.
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
>
>
>
>
>
>
> cctv-vcr@xxxxxxx wrote:
>
>>--
>>Carson City TV-VCR
>>
>>Could use an assist with this beast. Came in with shorted horz xstr and
>
> shorted pin xstr (q573). Unit will now turn on but ic801 will not regulate
> 130v b+. Unit turns on at 130v then quickly drops to 95v. Replaced stk
> 730-020 and checked all components in regulation circuit. Remove the load
> from b+ and 130v good, add any load, lamp or horz xstr and regulation stops.
> Yoke and flyback both good. Any Ideas?
>
>>Thanks, Tom Carson City TV
>>
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