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#1
10-14-2017, 02:30 PM
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Ma6900
My faithful MA6900 has a problem.
Today when I turned it on, I got a PowerGaurd error on the left channel. I have tried disconnecting all cables, but the problem still exists. Any suggestions?
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Home Theater: Sonos->MCD1100,Oppo 105D,Cary 306/200,MVP-871->SP3->C500T->MC501x3+MC402x2+MC252->PL300+F113x2+PL350+4xPL InWall+PL100,PL100 in games room,VPL-VW500ES, Shunyata Sigma HCx3, Shunyata Analogx2, Alpha HCx2, Alpha Digital, Wire World Silver Electra x8 Great Room: BDP-09FD,Sonos->MCD500->MX119->MC501x3+2xMA700s->PL200+PLC150+GRFX+F112,PRO-141FD Kid's Room: Sonos,Oppo 95->MX119->HCA1200mkii+4xMA700s->GR20s+FB210+GRLCR+2xGRFX,PRO-101FD Home Gym: Sonos->Oppo 105->MC252->GR10s+FB210,TC-P55ST60 Office at work: Cary 306/200, Michell Gyro SE w/TechnoArm+Meastro Wood->6900->GR10s+SB12-Plus Cottage: iPod,Oppo 95->Marantz SR7009->PSB Silver+ GRLCR+Silver FXi, MA700+PSB Mini in sunroom 
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#2
10-14-2017, 03:14 PM
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Ma6900
Hi Chad,
If you are comfortable taking off the top and bottom covers, I'd un-seat and re-seat all the connectors. Give 'me a good wiggle. Tom
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Main System: Amati Futura Mains Amati Homage VOX Center, Proac Response 1sc Rears, Three MC2301's for L,C,R MC 602 for the rears C 1100, MX 151, MCD 1100, MR 80 Nottingham Dais with Wave Mechanic Sumiko Palo Santos Presentation SurfacePro 3, RPi 4, ROON, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material. Lake House: Ohm F, MC 275V, C2300, MR 77, Rega P3 OnDeck: McIntosh MAC 4300v Last edited by W9TR; 10-14-2017 at 03:43 PM.
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#3
10-22-2017, 05:56 PM
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A BIG thank you to Ryan at Audio Classics!
He helped me to get my MA6900 working again.
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Home Theater: Sonos->MCD1100,Oppo 105D,Cary 306/200,MVP-871->SP3->C500T->MC501x3+MC402x2+MC252->PL300+F113x2+PL350+4xPL InWall+PL100,PL100 in games room,VPL-VW500ES, Shunyata Sigma HCx3, Shunyata Analogx2, Alpha HCx2, Alpha Digital, Wire World Silver Electra x8 Great Room: BDP-09FD,Sonos->MCD500->MX119->MC501x3+2xMA700s->PL200+PLC150+GRFX+F112,PRO-141FD Kid's Room: Sonos,Oppo 95->MX119->HCA1200mkii+4xMA700s->GR20s+FB210+GRLCR+2xGRFX,PRO-101FD Home Gym: Sonos->Oppo 105->MC252->GR10s+FB210,TC-P55ST60 Office at work: Cary 306/200, Michell Gyro SE w/TechnoArm+Meastro Wood->6900->GR10s+SB12-Plus Cottage: iPod,Oppo 95->Marantz SR7009->PSB Silver+ GRLCR+Silver FXi, MA700+PSB Mini in sunroom
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#4
10-22-2017, 06:18 PM
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Quote:
Thanks Sir, Bob
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Amps:VAC 450iQ Monos in Silver Flake on HRS M3X2-1921's, HRS G7 Footers/G-Links & Sound Anchor Conecoasters. Preamp:VAC Statement (on order) (Silver Flake) Digital Source: dCS Rossini CD/SACD Transport, Vivaldi APEX DAC, Upsampler Plus & matching Clock (Silver) Analogue Preamp:VAC Renaissance SE Phono stage in Silver Flake with XLR Output Option & with Nordost Valhalla XLR's. Analogue Sources:SME 20/2 w/SME V arm & Nordost Odin 2 Tone Arm Cable, Palo Santos Presentation Cartridge & Akai GX-400D Reel-to-Reel w/relapped heads by JRF Magnetic Sciences. Akai RC-17 cabled remote (original owner since 1974). Vibration Control:TT on HRS M3X2-1921 shelf. Speakers:Wilson Audio Alexia V (on order in Ferrari Argento Silver/Parchment grills sitting on Acoustic Diode Kit). Power Cables:4 Nordost Odin Supreme Reference on amps, preamp & DAC. Ansuz Acoustics C2 on Transport & Clock. Power Distribution:Ansuz Mainz D3 Distributor & Ansuz Mainz C2 1M Power Cable Power Outlets:Furutech GTX-D NCF (R) duplex outlet, GTX Wall Plate & Duplex Cover (x2) on dedicated, same panel phase, 20A breakers. Speaker Cables:2M Nordost Odin 2 Supreme Reference on Nordost Sort Lifts. (on Order) Signal Cables:Nordost Odin XLR's on dCS DAC & Amps. Digital Cables: Nordost Odin 2's, 110-ohm AES/EBU on dCS Transport to DAC. Clock Cables:5 each 75 ohm 1.25M Nordost Valhalla BNC/BNC Digital Ethernet Cable: WireWorld Platinum 1M Starlight® 8 Twinax Headphones:Vintage Koss Pro IV AA. RCM: Audio Desk PRO Tube Test Gear:Mint late '60's/calibrated Heathkit TT-1A, MaxiMatcher Power Amp & Preamp & Space Tech Labs ATT-3.02 tube test sets.
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#5
10-22-2017, 06:53 PM
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There is a service bulletin requiring capacitor C113 to be replaced.
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Home Theater: Sonos->MCD1100,Oppo 105D,Cary 306/200,MVP-871->SP3->C500T->MC501x3+MC402x2+MC252->PL300+F113x2+PL350+4xPL InWall+PL100,PL100 in games room,VPL-VW500ES, Shunyata Sigma HCx3, Shunyata Analogx2, Alpha HCx2, Alpha Digital, Wire World Silver Electra x8 Great Room: BDP-09FD,Sonos->MCD500->MX119->MC501x3+2xMA700s->PL200+PLC150+GRFX+F112,PRO-141FD Kid's Room: Sonos,Oppo 95->MX119->HCA1200mkii+4xMA700s->GR20s+FB210+GRLCR+2xGRFX,PRO-101FD Home Gym: Sonos->Oppo 105->MC252->GR10s+FB210,TC-P55ST60 Office at work: Cary 306/200, Michell Gyro SE w/TechnoArm+Meastro Wood->6900->GR10s+SB12-Plus Cottage: iPod,Oppo 95->Marantz SR7009->PSB Silver+ GRLCR+Silver FXi, MA700+PSB Mini in sunroom
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