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If you're tuned to a stereo station and the red Stereo light indicator light is lit up, it will remain lit even if you switch over to Phono (or Mic, or Aux). If you move the tuner dial away from that station, the stereo light will go out, regardless of which input you have selected. On my...

Thanks a lot for the input, guys. Much appreciated. I did verify that the lead spacing is 7.5 mm on both the original ECQ cap and the MKS4 WIMA cap, but I hear you about the lead length. I will go with the smaller MKS2 caps that Larry suggested, I'm sure I can bend the leads enough without a...

Thanks Larry. One more question. On the SX-636 BOM list, I didn't see replacements for the four output transistors (Q11-Q14) on the power amp. Do people generally not replace them on the 636? I'm asking because I just replaced them on the 737 I'm also working on, and they were included on...

Thanks darkhosis. Just looking for a good replacement part and yes, I am a rookie :) So I need all the help I can get. I did another search to replace EQ board cap 667-ECQ-E1474KF and came up with WIMA cap 505-MKS4.47/100/10 as a possibility. I used the following parameters to narrow the...

The SX-636 EQ Amp board has four 667-ECQ-E1474KF caps. Mouser says these are obsolete and unavailable. Will 598-225P47491XD3 work instead? The Power Amp board has two 598-DSF050J334 caps but they are also obsolete and unavailable. Will 80-F612JG334J063C work instead?

Oh, I still need to order most of the 737 BOM parts and already have a project saved at Mouser, so I'll just go with that and then get the few other parts from Digikey. The part I'm most unsure of is the replacement for 505-MKS2.47/50/10T. I think the others are pretty straightforward.

Thanks cuda440 for your response. Here are my plans for ordering substitutes for the BOM parts that are currently backordered at Mouser. If you or anyone could point out any mistakes, I'd appreciate it. Thank you. 512-KSC2690AYSTU -- order Mouser 512-KSC2690AY 647-UPW1E101MED -- order Mouser...

Okay, thanks for the input guys. I understand Mark's concern and advice on limiting most replacement jobs to those 4 parts.

I am fixing up a nice SX-737. It has the AWE-043 tuner board. I've successfully replaced "problem" transistors (725/726/1451) on the other boards, but have done nothing to the tuner board. Can you guys help me with a definitive answer about replacing components on the tuner board? Is there a...

I am also working on a 737 and decided to start by replacing transistors that are known to fail. Based on some other threads, I will be doing this: replacing 2sa725 and 2sa726 transistors with KSA992FBU replacing 2sc1451 transistors with KSC3503DSTU replacing 2sc1312 transistors with KSC1845...

512-KSC2690AYSTU (qty 1) 512-KSC1845FTA (qty 14) 647-UPW1E101MED (qty 5) 647-ULD1H010MDD1TD (qty 6) 647-UPW1V221MPD (qty 4) 863-1N4004RLG (qty 3) 863-1N5404RLG (qty 4)

I imported the latest SX-737 BOM (thanks guys!) to a project in my Mouser account. 7 of the parts (37 individual pieces, in total) are backordered. Some of them say they won't be restocked until October. Is this the usual case you guys experience? Do you look for substitutes elsewhere?

I snipped out the original lamps and spliced in to the existing wires (soldered and covered with heatshrink tubing). Worked great, looks good too.

Hi folks, my SX-737 is opened up and I replaced the seven fuse lamps with LEDs. No issues there. I also have LED bulbs to replace the indicator lamps, but I'm not certain about the best approach. To do this, it appears I'd have to unwrap the existing indicator bulb wires from the pins (where...