[TechAssist] Re: Counterfeit D1887 transistor?
- From: Al Gutz <alg@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 08 Mar 2005 22:20:33 -0500
If you stay in the same family all the specs are identical except I
rating, ei 1885, 1886, 1887.
Al G
Kevin wrote:
> I just wondered if anyone had seen this before. I replaced a D1885 with
> a new D1887 and the set (35" RCA, CTC169BD5 chassis) fired up good and
> ran for 10 minutes, but as soon as I turned it off the new D1887
> shorted. When I pulled the D1887 out I accidentally broke one of the
> legs off. Further testing showed me that the metal was very brittle. I
> also had another new D1887 from the same batch, and measuring from base
> to collector measured only 1 meg on my meter, and all the other
> NTE2354's in my bin measure at least 2 meg. The printing is also very
> faint on the D1887. Does this sound like a counterfeit transistor?
>
> By the way I installed a C4923 (NTE2354) in place of the D1885
> (original, subs to NTE2324) and it has been working for hours now. It
> passed the critical off test with flying colors.
>
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx
>
>
>
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