Help Identifying Components

David Collins davidkcollins2 at gmail.com
Sun Dec 24 16:07:10 CST 2017


If you could wait, getting one of those ‘unknown component testers’ would help you!

David Collins

> On 25 Dec 2017, at 5:27 am, Rob Jarratt via cctalk <cctalk at classiccmp.org> wrote:
> 
> I am continuing work to reverse engineer the schematic for my H7826 PSU. I
> have removed one of the daughter cards in order to draw its schematic, but I
> can't identify some of the surface mount components on it. I have posted a
> picture of it here:
> https://rjarratt.files.wordpress.com/2017/12/50-19530.jpg
> 
> 
> 
> The ones I can't identify are:
> 
> 
> 
> 1.       The component with two wide pins that looks like an IC
> approximately in the middle of the board. It is marked M106 (or it might be
> AA106) and 91813 underneath. I think it may be a resistor, but I am not
> sure.
> 
> 2.       Just to the right of this is another much thinner two-pin component
> which is black on top with a kind of white notch. I have no idea at all what
> this is.
> 
> 3.       The three 3-pin black components to the left of the first
> component. Two of them are marked "2T L" (or is that "ZT L"?), one appears
> to be marked "2X I" (letter "ih", not letter "el"). I guess they are
> transistors, but they may not be of course, and I don't know their pinout.
> 
> 
> 
> Any help with identifying what these are would be very helpful.
> 
> 
> 
> Thanks
> 
> 
> 
> Rob
> 


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