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  1. amr2

    Another MX-1000 refurbished

    Here are some pics of the latest addition to my collection. 1- Speaker binding posts New binding posts, capacitors and relays. MX-1000_01 by amr2 posted Jul 11, 2022 at 4:53 AMMX-1000_03 by amr2 posted Jul 11, 2022 at 4:53 AMMX-1000_04 by amr2 posted Jul 11, 2022 at 4:53 AMMX-1000_05 by amr2...
  2. amr2

    Yamaha MX-1000 Faceplate

    Hello I have fixed several MX-1000s, but have never owned one. I decided to add one to my collection :D. I received it this week. Its in very good shape. Original manual, a single owner, and never repaired. Good. But the packaging wasn't very good, and the courier company hit the package...
  3. amr2

    Sansui AU-111 restoration

    Hello I have a new project on the workbench :). It is a nice Sansui AU-111. The amp works, it has new output tubes, but it needs some attention. The idea is: - Change all the electrolytic capacitors, they are still the original ones. - Also change the mica ones, as suggested by @smurfer77 in...
  4. amr2

    Yamaha TX-1000 encoder

    Hello Does anybody know if the tuner encoder is still available? It is listed as Part# VG200400 - Rotary encoder EC16B30B
  5. amr2

    Pioneer SA-8100 restoration

    Hello I'm servicing this unit. All components seems to be OEM. I found that the control board ( AWG-017) have some cut traces and some components under the board. They appear to be OEM These are the installed capacitors C1 1/25 C2 1/25 C11 22/10 C12 22/10 C15 100/6.3 C16 100/6.3 C17 4.7/25...
  6. amr2

    Sansui 8080DB dolby board

    Hello I need some help with this receiver. Someone has worked on it, and the signal is lost in this board. I have signal until tape 1 rec output. The dolby switch have been disassembled, and the wafers are all different, perhaps someone have any information about their positions. On the other...
  7. amr2

    Any owner of Yamaha p4050?

    I would like to check the power supply voltages without load. Thanks you!
  8. amr2

    Yamaha PC2602 / PC1602 isle current

    This adjustment is missing in the service manual, and the idling current was unknown....until now. Thanks to AKer @Serg111 :beerchug: PD: sorry for the typo in the title :( I can not edit it.
  9. amr2

    Sony TA-N55ES Restoration

    Some pics :) TAN55ES-001 by amr2 posted Aug 25, 2019 at 10:13 AMTAN55ES-002 by amr2 posted Aug 25, 2019 at 10:13 AMTAN55ES-003 by amr2 posted Aug 25, 2019 at 10:13 AMTAN55ES-004 by amr2 posted Aug 25, 2019 at 10:13 AMTAN55ES-005 by amr2 posted Aug 25, 2019 at 10:13 AM A Class Board - Cleaning...
  10. amr2

    Revox C270 issues

    Hello I don't have much experience with reels, so any advice will be welcome. It started playing slowly, and after that:
  11. amr2

    McIntosh MA6100

    Hello I'm finishing the restoration of this beauty. The unit is in very good cosmetic condition. The main caps and the bridge diodes were damaged. I did a full recap, changed all bad parts, new bulbs, etc. I will post some pics once finished. But I have a big problem. The volume pot. Parts...
  12. amr2

    TAD 2402

    Hello I want to build a TAD 2402 clone. If anyone has any info about the exact box size, construction details, or any other information it will be very helpful Thank you
  13. amr2

    Simple Component Tester (Octopus)

    Hello I built this simple component tester, based on the HAMEG HZ65. It's very simple to build, and it performs quite well. If anyone is interested, this is the original Hameg service manual, schematic included.
  14. amr2

    Pioneer A-91A relay drivers

    Hello I'm servicing this integrated. It has several burned relay drivers (RN2201). Does anybody know a suitable replacement? Thank you.
  15. amr2

    Now it's time to ...

    :D:D:D
  16. amr2

    Von Schweikert VR4 Gen III HSE

    Hello I'm restoring a pair of Von Schweikert VR4 Gen III HSE. The first problem is that the previous owner changed many components in the crossover network, and I want to rebuild it with the original values. I was wondering if there is any information available about this, a schematic with the...
  17. amr2

    Some CA-3000 pics

    Some pics of a mint CA-3000 preamp, with original box. It has hardly been used, since it has been stored for many years. It only needs to clean the switches and potentiometers. It's from a friend of mine, who has also the BA-3000 in the same conditions :naughty:
  18. amr2

    Subwoofer JBL

    Hello I'm planning to build something with my JBL W15GTI, for music and movies. For reason of space, I need a compact box, so I'm going to use a sealed enclosure with EQ to increase the low frequency response to 25Hz. I have used this on other occasions and I like the result. This is only a...
  19. amr2

    Dynavector DV-505

    Hello I have this tone arm with electronic arm lift mechanism. Anybody knows the voltage of the coil (left connector)? Thank you.
  20. amr2

    Yamaha PC2002M restoration

    My latest pickup, an old PC2002M. It works, although it is in poor condition. I will disassembly it and restore it the best I can. The more difficult part to restore will be the meter and power switch plastic frames. If anyone have them (the plastic frames), please send me a PM… I will post...
  21. amr2

    Picked up a non-working Yamaha t-85

    Hello I have just picked up this tuner. The seller stated that the problem is only the screen that doesn't light up, but It doesn't work at all. When it powers on, only memory leds lights up (B1-B10). The rest of leds and the display lights up for a fraction of second when the unit is powered...
  22. amr2

    MX-1000 rebuild

    Hello A very abused MX-1000 is on the bench. Two techs have been working on it and now the amp is a complete disaster. Broken traces, several fake transistors, missing parts... I have removed both APS boards, because I want to test the power supply and V-AMP sections first. The power supply...
  23. amr2

    Yamaha Hyperbolic Conversion Amplification (HCA)

    From Audio power amplifier design. Douglas Self, Sixth Edition To whom it may concern... Yamaha non-switching Yamaha did not want to be left out of the non-switching business. Their version was called Hyperbolic Conversion Amplification (HCA). The implication seems to be that two hyperbolic...
  24. amr2

    Next restoration: Yamaha PC2602M

    Hello I will start with this tank the next week. The amplifier is in good shape, it needs a general cleaning and some minor restorations. This model uses a (noisy) rear fan to force air when it gets hot (TH >60ºC). I will change it for a quieter model. Now the bad part...it has a weak channel...
  25. amr2

    New Yamaha preamp

    Hello My "new" toy. A Yamaha C-70. I had to re-solder the power supply, It runs quite hot and there was a lot of cold joints. I removed the glue of the main PS capacitors also. Seems to work fine... :music: P.D: Is there any adjustment that needs to be checked?
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