Greetings all.
I have a nice Lambda LPT-7202-FM power supply with some trouble. I have the service manual with the Part List, but all of the parts has a Lambda internal number. So I cannot replace the solid state parts like the integrate circuit that the number is FBT-031... I am looking for some chart able to give me the commercial part number.
Does anybody has this information that want share with me ?
Any help will be appreciate.
Best regards
Victor
I have a nice Lambda LPT-7202-FM power supply with some trouble. I have the service manual with the Part List, but all of the parts has a Lambda internal number. So I cannot replace the solid state parts like the integrate circuit that the number is FBT-031... I am looking for some chart able to give me the commercial part number.
Does anybody has this information that want share with me ?
Any help will be appreciate.
Best regards
Victor
Commercial part number is likely a MC1466L which CAN be found.
Also see : https://www.diyaudio.com/community/threads/fbt-00-031-voltage-reg.113930/
What is the problem, because there is a chance that the integrated circuit is not at fault.
Also see : https://www.diyaudio.com/community/threads/fbt-00-031-voltage-reg.113930/
What is the problem, because there is a chance that the integrated circuit is not at fault.
Thank you for your message.
I bought this power supply out of order. I repaired one of the 20 v units, the other has a more serious problem since one of the printed circuit track has melted. Someone tried to repair but without success. The track has been replaced by a red wire and the IC 201 replaced by an MC1466L. I tested the capacitors and checked if the power transistors were in good condition... everything seems normal to me but the unit still does not work. I had the idea to replace all the transistors but I don't know what are the commercial number. I would be happy for any suggestion...
I put in copy two pictures of the power supply and a diagram showing in green the melted track. Thanks in advance
I bought this power supply out of order. I repaired one of the 20 v units, the other has a more serious problem since one of the printed circuit track has melted. Someone tried to repair but without success. The track has been replaced by a red wire and the IC 201 replaced by an MC1466L. I tested the capacitors and checked if the power transistors were in good condition... everything seems normal to me but the unit still does not work. I had the idea to replace all the transistors but I don't know what are the commercial number. I would be happy for any suggestion...
I put in copy two pictures of the power supply and a diagram showing in green the melted track. Thanks in advance
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Since you have the schematic, why not measure all the voltages from input to output to find where the problem is?
Seems much more efficient than asking randoms things here?
Jan
Seems much more efficient than asking randoms things here?
Jan
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