Picked up this SX-690 for 200 today. Faceplate is in ok condition and I’ll end up redoing someone’s attempt at vinyl wrapping. One of the STKs wasn’t good as it was giving crackling to the right channel. Luckily I have spares and it plays fine now.
It will go nice with its big brother my SX-890. Gonna sell the SX-680 I just recapped and will be looking out for the 590 and 790 next.
So a few weeks ago I ordered a couple of shirts off the website for the wife and I. Wanted to ensure we got them in time for our show last Friday night in Fort Worth. Mine came in but nothing for her. I went back to check and sure enough hers was back ordered. So they took my money for something they didn’t have in stock. So I requested to cancel her order and we would just pick her up one at the show, which we ended up doing. Three days go by and no response but their “team” was reviewing the request. Then suddenly Friday morning I get a response a shipping label was made. Reached out again said hey I requested to cancel that order. *Crickets*. Checked today and sure enough they still don’t have her shirt in stock on the website and show my order as pending since they made a shipping label, for an item they don’t have. Which means they won’t cancel it as it is pending and has a shipping label. What a crock of shit.
Don’t remember it being this color back in the day
Pioneer CT-F9191 apparently had been in a barn or an open garage as it was in terrible condition cosmetically and mechanically. Had a dead channel and was afraid the head had a dead channel. But luckily I got signals on my scope on both channels at the head. The Play/Rec switches were just that bad. New belts, tires, rebuilt the clutch, lube job and a new motor rubber tire. Now on to new bulbs, deep cleaning, and refurb the wood.
Got this SX-550 few days ago for cheap. Dial string was broken with a terrible repair attempt. Left channel would distort after about 15 % volume. Offsets were under 20mv but that channels bias was 0.000. Could not get it to move off 0 with the trim pot while the right was perfect at 25mv.
Finally traced it to that channels output transistors. First tested fine but the second was showing “shunted”. But what a pain jn the ass to swap these in the unit without disassembling.
Same old BS story from seller, “Selling my SX-580 receiver, can’t test as I don’t have the speaker blades”. Then what were you using then buddy. Anyway, I do have them. So got it set up and had audio on right channel but very faint on the left with a light crackle. Checked the protection fuses and left was actually missing. So bleed through from a probably shorted output transistors. Went to take off the cover and bottom plate, missing some screws. Oh joy, someone went where they shouldn’t have.
Went straight to the four output transistors to see which one wasn’t playing nice and found the bad one in 15 seconds. Replaced it, put in new fuses and it plays perfect. I was bored and because I had all the hardware I updated the amplifier and power supply boards capacitors and all transistors. Threw in a good cleaning and some new LEDs and she ready for eBay again.
Had this for a while and got around to it Friday. Got this at GW complete with box, paperwork and styrofoam. Rebuilt the power supply board (caps) and still had what appeared to be a weak motor. Disassembled, cleaned and cleaned some more and lubed with Deoxit 100. It finally came around to life and plays pretty well. Eject button switch still needs work and haven’t tried the record function yet. I have a couple of blanks I’ll get around to next weekend.
Bought this sx-680 off of eBay as is for 68.00. Had an assumption this might be my first unit that actually had a dead transformer, and apparently it does but luckily I have a spare. Plus I found someone selling all the down parts: knobs, faceplate, screws etc. so I got that coming in. Then I will get down to the nitty gritty.
Just got done with a restore in this SX-680 unit, new caps, transistors, stk modules etc. fought an issue for a bit that ended up being a bad solder joint on the mpx section. Anyways when I got it one channel had a blown stk caused by a bad paired transistor so I never got a baseline wpc. Got done and it shows about 47 wpc according to my math (19.48x19.48 / 8). But unit was originally rated around 30. Is this unusual? I’ve had units bump up a few wpc (5-7) after a good refresh but that much? Kinda new again to the scope as I hadn’t used one in about three decades. Thanks.
Just took this apart, gave it a lube job, cleaning, and a new belt plus replaced the bulbs with LEDs. Not perfect but it works.