YAESU RF PIN DIODE L709CER: WHERE TO GET?

[g6ypk]

Hi folks. I'm in need of 4 RF PIN diodes - type - L709CER - this to repair my Yaesu FT-7900 dual band transceiver.  This is D1072 & D1073 on the main pcb and would like to keep two for spare.

I have found them on the Internet, but only in reels of 1000 plus. None are to be found on ebay.

Will swap wife for two diodes, and for four I will throw in mother in-law and her gerbil.

Any help?  Tony ( g6ypk1@yahoo.com )

[xrunner]

I take it you tried calling Yaesu parts dept. I've ordered from them before.

[AG6QR]

I don't know where to get them, but Alan, who posts as w2aew on this board, recently did a repair video of a Yaesu FT-7800, where he found those diodes were defective in the radio (they used a different part number on the 7800, but the function was the same).  He replaced the diodes with the L709CER diodes used for the FT-7900, after looking at the schematic of the FT-7900 radio.

As I recall from the repair video, he was able to get four of them, but I don't recall whether he mentioned his source.  If it's not obvious after watching the videos, you could send him a private message.

The thread about the diagnosis is here.  You may want to look at Alan's YouTube channel for the follow-up where he discusses replacing the diodes.

https://www.eevblog.com/forum/projects/repair-video-yaesu-ft-7800-dual-band-vhfuhf-fm-transceiver-part-1/

Just for curiosity's sake, did your radio show the same symptom?  Was your diagnostic process similar to his?

[KJDS]

Can you post up a schematic and a photo of the circuit? If so I'll suggest an alternative that is readily available.

[w2aew]

FWIW, I ordered the parts directly from Yaesu.

[The_Penguin]

FWIW, I ordered the parts directly from Yaesu.

It's been a number of years now, but I've ordered direct  from Yaesu as well (Cerritos CA, if I remember correctly) and had good service.