Hello, I consider the curve tracer to be one of the best inventions for diagnostics, for me this Tektronix beast is unfortunately financially unavailable (I live in the Czech Republic), so I use at least a Chinese copy of the TI-210 and then one that I made myself. Thank you for the example, I'm solving a similar problem with my friend's ADCOM GCA510 amplifier - it looks like the transistors are original, but the difference between the individual pieces is so huge that it seems to me as if they were not sorted during production. I saw disassembled BJT transistors in a TO-3 case and the difference between the original and the fake was incredible, the fake had the chip itself a third the size of the original and the base was half the thickness - the mechanical design will tell you ...... 👍 Nice day 🙂 Tom
true, lots of fake and lots of reprinted transistors. I just uploaded an update to my prior video. Even if reprinted, those vfets show to be the correct model printed on the case.
My Exact Sony Power Amp back in the day my repairshop we sold and did factory warranty work for sony and I am glad I have the factory service manual for this amp for being 50 watts RMS per channel this amp really works well I have a pair of 1970s vintage Sony speakers Sony SS-G7.
What are you saying ? your not making it clear, This isn't even a question it's a statement. Leakage over time ? meaningless! how more accurate do you need ?
@@andymouse That person, if he is a person, is kind of confused🤪 🤔It would probably require buying a calibrated laser meter from a hardware store, then taking the transistors and throwing them in the air, then measuring how far they flew and looking up the range of the original transistor in the datasheet and comparing it to the fake one 🤣 All written using Google Translate - it works 😁
@@atelier_HiFi If I understood the writer correctly, he meant to have the material into which the transistors were inserted wrapped in foil and you connected it to ground using ESD tape.
If you mean 'for ESD safety ' then, no not necessary these are robust. There is an argument for protecting ALL semiconductors but not one I subscribe to. Please be more clear and use Google Translate...These comments are for everyone so take your time to express your point as I for instance only have my mother tongue.
I am here friend with a glass of white wine ...Enjoying your science
Cheers! 🍷
Hello, I consider the curve tracer to be one of the best inventions for diagnostics, for me this Tektronix beast is unfortunately financially unavailable (I live in the Czech Republic), so I use at least a Chinese copy of the TI-210 and then one that I made myself.
Thank you for the example, I'm solving a similar problem with my friend's ADCOM GCA510 amplifier - it looks like the transistors are original, but the difference between the individual pieces is so huge that it seems to me as if they were not sorted during production.
I saw disassembled BJT transistors in a TO-3 case and the difference between the original and the fake was incredible, the fake had the chip itself a third the size of the original and the base was half the thickness - the mechanical design will tell you ...... 👍
Nice day 🙂 Tom
Yes I find really useful !
true, lots of fake and lots of reprinted transistors. I just uploaded an update to my prior video. Even if reprinted, those vfets show to be the correct model printed on the case.
My Exact Sony Power Amp back in the day my repairshop we sold and did factory warranty work for sony and I am glad I have the factory service manual for this amp for being 50 watts RMS per channel this amp really works well I have a pair of 1970s vintage Sony speakers Sony SS-G7.
I hear you! The TA-5650 has a superb sound quality especially with speakers that have good efficiency.
One things with that amp I noticed is all the original capacitors !
it is an old amp that will eventually need full restoration.
Interesting!
How about leakage over time they are original get more accurate test equipment
please elaborate
What are you saying ? your not making it clear, This isn't even a question it's a statement. Leakage over time ? meaningless! how more accurate do you need ?
@@andymouse precisely 😄
@@atelier_HiFi :)
@@andymouse That person, if he is a person, is kind of confused🤪
🤔It would probably require buying a calibrated laser meter from a hardware store, then taking the transistors and throwing them in the air, then measuring how far they flew and looking up the range of the original transistor in the datasheet and comparing it to the fake one 🤣
All written using Google Translate - it works 😁
And you should have tin foil and grounded
please elaborate
@@atelier_HiFi If I understood the writer correctly, he meant to have the material into which the transistors were inserted wrapped in foil and you connected it to ground using ESD tape.
Let him elaborate.
If you mean 'for ESD safety ' then, no not necessary these are robust. There is an argument for protecting ALL semiconductors but not one I subscribe to. Please be more clear and use Google Translate...These comments are for everyone so take your time to express your point as I for instance only have my mother tongue.
@@andymouse precisely, ESD not a concern with vfets. It sounds to me some education is required on his part.