Yeah, or some other means of extending the leads (or pads)...How big are the pads? Probably you can fit it with a generous blob of solder.
It's more likely for reverse polarity protection. Except now it's failed and current is flowing in both directions.I'd think it should be closer to 8V if it's for protection (at least over-voltage).
Removed from the board it tests conductive in both directions...It's more likely for reverse polarity protection. Except now it's failed and current is flowing in both directions.
Removed from the board it tests conductive in both directions...
Well funny enough the guy I got it from didn't have a power brick so I'm wondering if someone tried to power it from a third party adaptor in which the polarity was wrong and that's what killed it.It's more likely for reverse polarity protection. Except now it's failed and current is flowing in both directions.
I can only find the DDZ13BS in the super tiny packages....I pulled one out to test, looks like a 13V Zener diode somewhere around the SMB or DO-215AA package size.
Yes, all I had to go on was the KW marking....Yeah, or some other means of extending the leads (or pads)...
BUT - I'm really curious about the actual specs of the original part. In addition to neglecting to check the package size, I should have also looked more closely at the diode's specs, as the 13V rating seems high; I'd think it should be closer to 8V if it's for protection (at least over-voltage). This begs all kinds of questions about the marking, since I can't find any other reference for 'KW' than DDZ13B, and I also can't find a zener with DDZ13B's specs in a SMB gull wing package. It very well may be the device code is a coincidence.
In the meantime @SuperSVGA is correct in that you can run the machine without it - even if just to test.
now why didn't I think of that...How big are the pads? Probably you can fit it with a generous blob of solder.
1SMB5928 probably works fine, I think it's J-lead but should fit. The gull wing style like the original seems harder to find.I can only find the DDZ13BS in the super tiny packages....
That seems to be the way to go... based on @SuperSVGA, the zener you bought is the correct specs, just needs to 'made' to fit (and @MacUp72's like supports this).now why didn't I think of that...
The 145B is slightly different - I think the FPU footprint got deleted and extra RAM added?Yeah, -ish... to clarify, the 140/145/145B and 170 share the same motherboard, and the 160/165 and 180 share a revised motherboard... the power circuit looks a little simplified, but it looks like most of the major components are still there in a recognizable / similarish configuration.