RG-2 Transistor List

[hertzdonut]

I recapped my RG-2 a couple of years ago, and for additional longevity's sake, decided a couple of nights ago to replace the transistors. The unit works great, so there's no troubleshooting involved.

I hunted around, but didn't find a list anywhere, so decided to post mine here, in case anyone in the future needs a reference. I compared my board to the service manual, fortunately they were identical. I dug around the web for cross-reference compatible numbers and found them all. Maybe someone has an opinion for alternatives, quite possible, as I am not an EE.

I have replaced the 25 transistors listed below, and my RG-2 is back up and working great.

As always, YMMV, check your board, watch your pins, don't assume.

- Jeff

Q1, Q2, Q7-Q14, Q21-Q24
Orig: 2SC1400 NPN
New: KSC1845FTA
(14 in all)

Q15-Q20
Orig: 2SA750 PNP
New: KSA992
(6 in all)

Q25-Q26
Orig: 2SC2575 NPN
New: KSC2383
(2 in all)

Q30
Orig: 2SC1384 NPN
New: KSC2690AYS
(1 needed)

Q32
Orig: 2SB682 PNP
New: KSA940
(1 needed)

Q33
Orig: 2SA1100 PNP
New: KSA1013YBU
(1 needed)

 

[sawdust]

I recapped my RG-2 a couple of years ago, and for additional longevity's sake, decided a couple of nights ago to replace the transistors. The unit works great, so there's no troubleshooting involved.

I hunted around, but didn't find a list a

Thanks Jeff , that transistor list will come in handy I recapped mine RG-2 and RG-9 a few years ago, I have a but load transistors to use up and bench work is good therapy for me

 

[hertzdonut]

You are very welcome, sawdust! If your board/list matches up with mine, be aware there were two (three?) transistors with the pin orientation reversed between the originals and the new ones. I apologize, I should've noted exactly which ones when I ran into them! The new 1845's and the 992's all matched up, and so did Q32 with the TO-220 case. So the ones to look closely at are Q25, Q26, Q30, Q33. Really should have written that down, that's my fault, sorry!