Pioneer SX-1250 Diode Replacements?

[DaDima]

Can you help me track down replacement diodes for my PIONEER SX-1250 Restoration - the diodes are basically the only ones that I have not finished replacing because some part numbers are not available in the BOM list.

Power Amp (048)
1S1886 - D3,D4,D6,D7,D10,D11
1S2471 - D8, D9
1S2473 - D5 (512-1N4148)

POWER SUPPLY (107)
SIB01-04 - D1, D2, D3, D4
SIB01-01 (1S1885) - D5, D6

STABILIZER (106)
WZ-240 Zener - D1, D3 (512-1B5252B)
WZ-061 Zener - D5 (512-1N5234B)
1S2473 - D2, D4, D6 (512-1N4148)
S5151R - D7, D8 (Big Old Pioneer Stuff Built to Last?)

PROTECTION CKT (091)
1S2473 - D1, D2, D4, D5 (512-1N4148)
1S2471 - D3
S5151R - D6 (Big Old Pioneer Stuff Built to Last?)
S5151 - D7 (Big Old Pioneer Stuff Built to Last?)

If you guys can help me out with the part numbers for these diodes or if you can point me to the right direction, I would appreciate it very much.
Thanks, guys.

 

[elnaldo]

I'd let the diodes alone until you find one that has failed.

 

[w1jim]

I'd let the diodes alone until you find one that has failed.

I agree - unless you have a failure I'd leave them alone.

 

[DaDima]

I agree too - there are no exact replacements for these nowadays. Some of these are Zeners too.
So, to test it, I will just de-solder and lift one leg and use the multimeter in 'diode' mode - see if it only goes one way, right? Are there ohms values I should be watching out for?
I also have a Peak DCA Pro to test these diodes with.
Is there a real-world stress test for these? Or do I need to?
Thanks, guys.

 

[elnaldo]

I wouldn't even desolder them, more chances of damaging the PCB or the component.

I'd check a diode just in the case you narrowed a fail to that specific part.

Most of the times you can measure a diode in circuit, DMM in diode mode. If it reads shorted it's usually bad.