[TechAssist] Re: Samsung HCN4226W-STK392-040 Sanyo original IC-smoked RZ123-126
- From: Al Gutz <alg@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 19 Dec 2005 21:34:00 -0500
Dale
All the STK are either made by Sanyo Semiconductor or Chineese knockoffs.
Possibly the original may have opened something in the IC due to
overload or you may have just got bad ones. When you try again pull the
didital converg module before you turn on the set and see if it runs too
hot. The P55 chassis doesn't have as much STK problems as the P54.
Al G
Dale Lubow wrote:
> I have a Samsung HCN4226W with the red convergence bad. I ordered
> 2-STK392-040 from Tritronics and the packages they came in said Sanyo
> original IC. Before I did anything I verified the problem again. The red
> convergence was very distorted. I then examined and checked the resistors on
> the convergence board. Everything checked OK. I first just replaced the one
> STK392-040 that had the red drivers in it just to see if it would take care
> of the problem. ResistorsRZ123,124,125, 126 started smoking and the little
> pico fuse went out. Then I stuck the original STK back in it and replaced
> the pico fuse(resistors were still ok). I was back to my original distorted
> red convergence. I though maybe I got a bad new IC so I tried the 2nd one I
> ordered and it started burning the same resistors again. I have to concluded
> the IC's I got from Tritronics are not compatible with the originals. They
> look the same with the Sanyo name on it and the rest of the numbers in the
> same places. I re-estimated the original 1201-001225 Samsung IC's to my
> customer because I know they should work OK. I looked through the previous
> posts but I didn't see any problem like this listed. Has anyone else had any
> similar problems? I usually feel safe with Sanyo originals in this
> application, but now I am not so sure?
> TIA
> Dale
>
> --
> Dale A. Lubow CET
> Harris TV & Appliance
> 335 Lincoln Way
> Ames, IA 50010
> 515-232-1109 (Voice)
> 515-232-3356 (Fax)
> HarrisTV@xxxxxxxxx
>
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