BA-2000 Diodes

[Sriskie]

I'm looking at the F-2661 board and I see that DO1 & DO2 are physically larger but look similar to DO3 & DO4.

The schematic lists them all as VD1212s and the actual board has the double diode symbols for all four as well. For VD1212 I would use a pair of in series 1N4148s.

The parts list shows DO3 & DO4 as VD1212 and DO1 & DO2 as 1S1588/1S2473D which seems to support what is presently on the board. For 1S1588/1S22473D I would use a single 1N4148.

Should I assume that DO1/2 are indeed single diodes regardless of what the schematic and symbols on the board show?

 

[Sriskie]

I just realized that DO5-14 look nothing like DO1 & DO2 even though they're all listed as 1S1588/1S2473Ds. Unless someone corrects me, I'll go with DO1 & DO2 being varistors and replace with 2X 1N4148s.

 

[Hyperion]

Perhaps you could post pictures of what is in there now, (key information) or what you removed and from where - one look at this information should allow our knowledgeable readers to direct you correctly.

("knowledgeable readers" - I might even be one myself :scratch2: )

 

[petehall347]

put your meter across them on diode test and look at volt drops ..you will soon see what's inside .

 

[Sriskie]

The voltage drop was around 1.2 for both types. That's too high for a single diode, isn't it?


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[petehall347]

yes 1.2v is looking like double diodes to me

 

[Sriskie]

Thanks. I want to be sure to get this right.


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[vigman]

.68 ~.72 for a single typically…..

 

[Sriskie]

Sounds familiar to me.

The Sansui service manuals sure are dodgey. I'm definitely developing trust issues with them.


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