A project like this one is where experience really means something! On the surface, this looks like a low power amp with plenty of room to work. Once you turn the light on (so to speak) you start to flush out all the bugs. Enjoyed the custom circuit breakdown; this should serve your customer quite well. Another great save of a nice looking integrated amplifier.
You deserve to have more subs. I like the approch you take to work through the trouble. The edits are abbrupt on occassion, but the videos are really enjoyable.
@@Poppinwheeeeellllllieeeeez Thanks for your feedback. Sometimes I'll hack at the video to get it down in time as I feel they go on way too long. Sometimes it's just sloppy editing. I'll try to do better.
I have this same unit. Sony TA-313 E-model. A beauty like you said. I ordered an amp chip overseas which is also an upgrade. Mine doesn't have the exact same problems like this one but it was a pleasure learning from a pro like yourself. You gave me a lot of ideas. However I'm a beginner and it's my first project ever. So thanks, good job
Good video, Really above and beyond effort. Lots of good work to save a really good looking unit. I did the same to a Technics SA-5170. A mid-mid level receiver. It was hacked up very badly by at least two people judging from the previous "work" done on it. The power amp section was really wrecked. After some research I read that as a 35 Watt Receiver it never sounded that good from the factory so I performed a resto-mod of my own. The transformer is beefy enough so I made a new pre and power amp board and used a pair of TDA7293 ICs on boards. Set the gain, input impedance, and seriously augmented the heat sink. Added a Speaker Protection board and changed a few other things for good measure. I also added a blue aqua colored gel to the back of the dial face and tuning meter. Honestly, for a Frankenstein it looks and sounds really good. I can get a very clean 56-Watts per channel out of it. And it looks really good at night with the lights down low. Thanks for the video and the knowledge.
I think he got that light assembly from a toaster oven. When you mentioned outrageous shipping cost had a strong feeling you were Canadian, heard about this from another Canadian Tech.
Excellent work and smart thinking on saving a nice looking unit. I have some small amplifier boards that were made up so that I can use modern components to restore Pioneer 80 series SX (780, 980, 1080, etc). Better than sending off to e-waste. I have a few different dead amps made of different kinds made by Yamaha, a couple Hitachi, and a couple from a different brand, all with dead Sanken or STK packs. How well do you think this mod would work with a pair of TDA7294? I can work up to a +/- 40v (thought 35-38 would probably be better) power supply and they should offer decent power. Only reason I’m thinking these is because I happen to have 120 of them from an amplifier manufacturer that I did some repair work for. I won’t mention their name, as they left a sour taste in my mouth, but fairly well known and as soon as I gave my notice of leave I guess I was no longer eligible for pay. So I didn’t get paid for my last weeks worth of work so in exchange I got some parting gifts.
Wouldn't it be higher because your mains voltage is on the high side? I am in Canada and I have 122 volts on the mains. Many places only have 110-115volts.
Hello, great video! I've also a TA-313. As you mentioned I'm also not happy with the bass control. Can you please tell me wat for modifications you did on the bass control? I'm very curious to hear the difference...
Honestly, I can't remember now. I think I changed capacitor values until I was happy with the result. Tone controls are basically RC networks and fiddling with the values will change the filters
Could it be that the shields around the transformer together with the bolts that holds them together forms some kind of a "winding" around on the outside of the transformer? Some form of short circuted winding that is. So that 60Hz from the transformer is induced in it and making it hum? Isn't the original incandescent bulb over the meters placed in a lightpipe to shine light evenly down into the meters, so that the best place to put new LEDs is where the original bulb was, and point them straight into the light pipe?
A project like this one is where experience really means something! On the surface, this looks like a low power amp with plenty of room to work. Once you turn the light on (so to speak) you start to flush out all the bugs. Enjoyed the custom circuit breakdown; this should serve your customer quite well. Another great save of a nice looking integrated amplifier.
You are the master of repairs and mods. Excellent work!
Thanks Alexis but I'm not a master
You deserve to have more subs. I like the approch you take to work through the trouble. The edits are abbrupt on occassion, but the videos are really enjoyable.
@@Poppinwheeeeellllllieeeeez Thanks for your feedback. Sometimes I'll hack at the video to get it down in time as I feel they go on way too long. Sometimes it's just sloppy editing. I'll try to do better.
I can't wait, other repairs have been seen here almost everything, those 3 hour repairs of the amplifier, I'm having a lot of fun, thanks again !!!
You really had your hands full with this one. But as usual you pulled through with flying colors.
I have this same unit. Sony TA-313 E-model. A beauty like you said. I ordered an amp chip overseas which is also an upgrade. Mine doesn't have the exact same problems like this one but it was a pleasure learning from a pro like yourself. You gave me a lot of ideas. However I'm a beginner and it's my first project ever. So thanks, good job
Good video, Really above and beyond effort. Lots of good work to save a really good looking unit. I did the same to a Technics SA-5170. A mid-mid level receiver. It was hacked up very badly by at least two people judging from the previous "work" done on it. The power amp section was really wrecked. After some research I read that as a 35 Watt Receiver it never sounded that good from the factory so I performed a resto-mod of my own. The transformer is beefy enough so I made a new pre and power amp board and used a pair of TDA7293 ICs on boards. Set the gain, input impedance, and seriously augmented the heat sink. Added a Speaker Protection board and changed a few other things for good measure. I also added a blue aqua colored gel to the back of the dial face and tuning meter. Honestly, for a Frankenstein it looks and sounds really good. I can get a very clean 56-Watts per channel out of it. And it looks really good at night with the lights down low. Thanks for the video and the knowledge.
I think he got that light assembly from a toaster oven. When you mentioned outrageous shipping cost had a strong feeling you were Canadian, heard about this from another Canadian Tech.
Excellent work and smart thinking on saving a nice looking unit. I have some small amplifier boards that were made up so that I can use modern components to restore Pioneer 80 series SX (780, 980, 1080, etc). Better than sending off to e-waste.
I have a few different dead amps made of different kinds made by Yamaha, a couple Hitachi, and a couple from a different brand, all with dead Sanken or STK packs. How well do you think this mod would work with a pair of TDA7294? I can work up to a +/- 40v (thought 35-38 would probably be better) power supply and they should offer decent power. Only reason I’m thinking these is because I happen to have 120 of them from an amplifier manufacturer that I did some repair work for. I won’t mention their name, as they left a sour taste in my mouth, but fairly well known and as soon as I gave my notice of leave I guess I was no longer eligible for pay. So I didn’t get paid for my last weeks worth of work so in exchange I got some parting gifts.
Wouldn't it be higher because your mains voltage is on the high side? I am in Canada and I have 122 volts on the mains. Many places only have 110-115volts.
nice little unit 25 watts per channel from 1978 or 79? had one in the mid 80's someone gave to me.
Typical Sony build quality which is good. Stunning looks and a nice all around amplifier
Hello, great video! I've also a TA-313. As you mentioned I'm also not happy with the bass control. Can you please tell me wat for modifications you did on the bass control? I'm very curious to hear the difference...
Honestly, I can't remember now. I think I changed capacitor values until I was happy with the result. Tone controls are basically RC networks and fiddling with the values will change the filters
Hello What bulb you use for aux button ?? How much watts it have?
Could it be that the shields around the transformer together with the bolts that holds them together forms some kind of a "winding" around on the outside of the transformer?
Some form of short circuted winding that is. So that 60Hz from the transformer is induced in it and making it hum?
Isn't the original incandescent bulb over the meters placed in a lightpipe to shine light evenly down into the meters,
so that the best place to put new LEDs is where the original bulb was, and point them straight into the light pipe?
why can't you just connect some mosfet on the output instead?
Are you up in Edmonton?
Yes
Did you make any money in it?
Considering the time invested, no. But I don't do this for the money
Blue LED's for the meters would look really cool
Modrá je hnusná