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  #21  
Old 08-04-2011, 05:19 PM
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Quote:
Originally Posted by altbrewer View Post
Well, son is married, visiting family have gone home and life is back to a semblance of normal, so I finally got back to this project. As it turns out, whoever worked on it before had the diffuser in backwards:

Attachment 11464

You can see it is flipped left to right, with the white mask for the markings around the volume control on the left in this picture, which is the right from the front (volume control is on the right on frontal view)

Here is the way the diffuser was oriented against the bulbs. The poorly drawn red circles show where bulbs and holes for the bulbs do not line up:

Attachment 11465

And flipping the diffuser over makes the bulbs and holes line up:

Attachment 11466

I couldn't include the last pic in this post so will show the final result in the next. I see I still haven't got the hang of placing full size images in the text of a post.
Wow...you had mentioned the diffuser in place but didn't mention anything amiss with its orientation. It seems pretty obvious that someone had the unit apart and did not reassemble it correctly. That would definitely mess up the light diffusion...I can't imagine this having been done at the factory.

Glad you got it solved, between that and removing the resistor, you should be in good shape!


Pete
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No. 35


Main System: Harmon Kardon T60 TT/Ortofon 2M Black, McIntosh: MR78, MCD1000 Transport on Stillpoint ultra minis, MDA1000 D/A Converter on Stillpoint ultra minis, MS750 Music Server on Rollerblock Jr's, C40, MC501's (3), Soundcraftsmen: DC2215 Eq/AS1000 Real time analyzer, DBX 3BX II, Carver C9, Nakamichi Dragon, Crown SX724, Crown D-75A (as headphone amp), Sony XBR55X900E 4K TV, JBL L220A's, JBL B460, Sumo Delilah active crossover, WireWorld Silver Eclipse audio interconnects, WireWorld Starlight and Silver Starlight Coaxial Digital interconnects, Wireworld SuperNova 7 Toslink digital interconnect, WireWorld Aurora 7 and Silver Electra Power cords, Wireworld Silver Eclipse 8 speaker cables, Terk AF-1 Powered Antenna, PS Audio Direct Stream Power Plant 12, Oppo UDP-205 4K Blu-Ray Player, Bryson BUC-1 USB Converter, Wireworld Gold Starlight XLR Digital interconnect

Florida Room/Art Studio System: Pioneer PL-L1000 TT/Audio Technica ATS52W2, McIntosh: MR77, C32, MC2205; Crown Power Line Four, Wyred for Sound DAC-2 Digital to Analog converter, Soundcraftsmen AE2000 Eq, JBL 4313B's, JBL 2241-based Sub, JBL BX63A Active Crossover, Oppo BDP-105D Blu-Ray Player, Samsung 5500 Series 32" Smart TV, Terk AF-1 Powered Antenna

Master Bedroom System: McIntosh: MX120 Theater processor, MC206 6-channel amplifier; MR74 AM/FM Tuner, Oppo UDP-203 4K Blu-ray player, JVC HM-DH40000U D-Theater Digital VHS, Phase Technology PC80 Towers (now used as stands), (2) JBL 4401's, (1) JBL Studio 6IW speaker, (2) JBL Studio 6IC speakers, Sony XBR-49X900E UHD TV, Panamax 1000 Line Conditioner, (2) JL Audio E110 Subwoofers, Wireworld Solstice speaker cables, Wireworld Aurora Power cords, Wireworld Equinox and Solstice speaker cables and various other flavors of Wireworld and Audioquest cabling

Office System: Marantz 150 Tuner, Crown DL 2, Crown EQ 2, Crown SA 2, Crown D-75A (as headphone amp), McIntosh MCD7009 (as transport), DBX 3BX Series II, Oppo BDP-103 Blu-ray player, JBL 4401's, JL Audio E112 Subwoofer, Samsung 5500 series 32" Smart TV, Wire World Oasis audio interconnects, Wire World Solstice speaker cables, Wyred for Sound DAC-2 DSDse Digital to Analog converter, Wireworld Starlight Coaxial Digital Interconnect, Sennheiser HD800 Headphones, Sennheiser HDVA600 Headphone amp, Wireworld Silver Eclipse Balanced Interconnects, Wireworld Platinum Starlight USB Cable

High Resolution Source: HP Omen 17" Gaming Laptop
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  #22  
Old 08-04-2011, 05:21 PM
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I see from your last photo that it looks perfect. How did you re-attach the diffuser?

Pete
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No. 35


Main System: Harmon Kardon T60 TT/Ortofon 2M Black, McIntosh: MR78, MCD1000 Transport on Stillpoint ultra minis, MDA1000 D/A Converter on Stillpoint ultra minis, MS750 Music Server on Rollerblock Jr's, C40, MC501's (3), Soundcraftsmen: DC2215 Eq/AS1000 Real time analyzer, DBX 3BX II, Carver C9, Nakamichi Dragon, Crown SX724, Crown D-75A (as headphone amp), Sony XBR55X900E 4K TV, JBL L220A's, JBL B460, Sumo Delilah active crossover, WireWorld Silver Eclipse audio interconnects, WireWorld Starlight and Silver Starlight Coaxial Digital interconnects, Wireworld SuperNova 7 Toslink digital interconnect, WireWorld Aurora 7 and Silver Electra Power cords, Wireworld Silver Eclipse 8 speaker cables, Terk AF-1 Powered Antenna, PS Audio Direct Stream Power Plant 12, Oppo UDP-205 4K Blu-Ray Player, Bryson BUC-1 USB Converter, Wireworld Gold Starlight XLR Digital interconnect

Florida Room/Art Studio System: Pioneer PL-L1000 TT/Audio Technica ATS52W2, McIntosh: MR77, C32, MC2205; Crown Power Line Four, Wyred for Sound DAC-2 Digital to Analog converter, Soundcraftsmen AE2000 Eq, JBL 4313B's, JBL 2241-based Sub, JBL BX63A Active Crossover, Oppo BDP-105D Blu-Ray Player, Samsung 5500 Series 32" Smart TV, Terk AF-1 Powered Antenna

Master Bedroom System: McIntosh: MX120 Theater processor, MC206 6-channel amplifier; MR74 AM/FM Tuner, Oppo UDP-203 4K Blu-ray player, JVC HM-DH40000U D-Theater Digital VHS, Phase Technology PC80 Towers (now used as stands), (2) JBL 4401's, (1) JBL Studio 6IW speaker, (2) JBL Studio 6IC speakers, Sony XBR-49X900E UHD TV, Panamax 1000 Line Conditioner, (2) JL Audio E110 Subwoofers, Wireworld Solstice speaker cables, Wireworld Aurora Power cords, Wireworld Equinox and Solstice speaker cables and various other flavors of Wireworld and Audioquest cabling

Office System: Marantz 150 Tuner, Crown DL 2, Crown EQ 2, Crown SA 2, Crown D-75A (as headphone amp), McIntosh MCD7009 (as transport), DBX 3BX Series II, Oppo BDP-103 Blu-ray player, JBL 4401's, JL Audio E112 Subwoofer, Samsung 5500 series 32" Smart TV, Wire World Oasis audio interconnects, Wire World Solstice speaker cables, Wyred for Sound DAC-2 DSDse Digital to Analog converter, Wireworld Starlight Coaxial Digital Interconnect, Sennheiser HD800 Headphones, Sennheiser HDVA600 Headphone amp, Wireworld Silver Eclipse Balanced Interconnects, Wireworld Platinum Starlight USB Cable

High Resolution Source: HP Omen 17" Gaming Laptop
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  #23  
Old 08-04-2011, 05:27 PM
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The diffuser has a screw at each end that attaches it to the faceplate bracket. They should be visible in the first photo. It is also held in place by the tape mask at the top of the diffuser.
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  #24  
Old 08-04-2011, 05:33 PM
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That's right...I forgot about the two screws. The tape mask should also have some polyurethane foam on it that acts as a light seal. Over time, this can deteriorate and can be replaced. There are also one of these at each end of the dial glass.

In case you are interested, there are a couple of threads in which I chronicled a complete cleaning of my MR78.

Here is the main cleaning thread:

http://audioaficionado.org/showthrea...=mr78+cleaning




And here is the replacement of the foam tape light seals:

http://audioaficionado.org/showthrea...=mr78+cleaning


In this thread, I also discuss the resistor removal. (I hadn't gotten my close up photos perfected at this point-I'm much better at it now).



Pete
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No. 35


Main System: Harmon Kardon T60 TT/Ortofon 2M Black, McIntosh: MR78, MCD1000 Transport on Stillpoint ultra minis, MDA1000 D/A Converter on Stillpoint ultra minis, MS750 Music Server on Rollerblock Jr's, C40, MC501's (3), Soundcraftsmen: DC2215 Eq/AS1000 Real time analyzer, DBX 3BX II, Carver C9, Nakamichi Dragon, Crown SX724, Crown D-75A (as headphone amp), Sony XBR55X900E 4K TV, JBL L220A's, JBL B460, Sumo Delilah active crossover, WireWorld Silver Eclipse audio interconnects, WireWorld Starlight and Silver Starlight Coaxial Digital interconnects, Wireworld SuperNova 7 Toslink digital interconnect, WireWorld Aurora 7 and Silver Electra Power cords, Wireworld Silver Eclipse 8 speaker cables, Terk AF-1 Powered Antenna, PS Audio Direct Stream Power Plant 12, Oppo UDP-205 4K Blu-Ray Player, Bryson BUC-1 USB Converter, Wireworld Gold Starlight XLR Digital interconnect

Florida Room/Art Studio System: Pioneer PL-L1000 TT/Audio Technica ATS52W2, McIntosh: MR77, C32, MC2205; Crown Power Line Four, Wyred for Sound DAC-2 Digital to Analog converter, Soundcraftsmen AE2000 Eq, JBL 4313B's, JBL 2241-based Sub, JBL BX63A Active Crossover, Oppo BDP-105D Blu-Ray Player, Samsung 5500 Series 32" Smart TV, Terk AF-1 Powered Antenna

Master Bedroom System: McIntosh: MX120 Theater processor, MC206 6-channel amplifier; MR74 AM/FM Tuner, Oppo UDP-203 4K Blu-ray player, JVC HM-DH40000U D-Theater Digital VHS, Phase Technology PC80 Towers (now used as stands), (2) JBL 4401's, (1) JBL Studio 6IW speaker, (2) JBL Studio 6IC speakers, Sony XBR-49X900E UHD TV, Panamax 1000 Line Conditioner, (2) JL Audio E110 Subwoofers, Wireworld Solstice speaker cables, Wireworld Aurora Power cords, Wireworld Equinox and Solstice speaker cables and various other flavors of Wireworld and Audioquest cabling

Office System: Marantz 150 Tuner, Crown DL 2, Crown EQ 2, Crown SA 2, Crown D-75A (as headphone amp), McIntosh MCD7009 (as transport), DBX 3BX Series II, Oppo BDP-103 Blu-ray player, JBL 4401's, JL Audio E112 Subwoofer, Samsung 5500 series 32" Smart TV, Wire World Oasis audio interconnects, Wire World Solstice speaker cables, Wyred for Sound DAC-2 DSDse Digital to Analog converter, Wireworld Starlight Coaxial Digital Interconnect, Sennheiser HD800 Headphones, Sennheiser HDVA600 Headphone amp, Wireworld Silver Eclipse Balanced Interconnects, Wireworld Platinum Starlight USB Cable

High Resolution Source: HP Omen 17" Gaming Laptop

Last edited by Vintage Pete; 11-30-2011 at 02:36 AM. Reason: Typo correction
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  #25  
Old 08-04-2011, 07:29 PM
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Mike.......She's looking good now. Great job.


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STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario
LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113
VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A
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  #26  
Old 11-28-2011, 11:52 PM
longgone longgone is offline
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Is there a little switch on top of the tuner that brightens or dims the lettered lights?
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  #27  
Old 11-29-2011, 12:16 AM
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Quote:
Originally Posted by longgone View Post
Is there a little switch on top of the tuner that brightens or dims the lettered lights?
The switch on top only dims the dial scale and tuning/signal strength meter lights-not the lettering across the lower front panel.


Pete
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No. 35


Main System: Harmon Kardon T60 TT/Ortofon 2M Black, McIntosh: MR78, MCD1000 Transport on Stillpoint ultra minis, MDA1000 D/A Converter on Stillpoint ultra minis, MS750 Music Server on Rollerblock Jr's, C40, MC501's (3), Soundcraftsmen: DC2215 Eq/AS1000 Real time analyzer, DBX 3BX II, Carver C9, Nakamichi Dragon, Crown SX724, Crown D-75A (as headphone amp), Sony XBR55X900E 4K TV, JBL L220A's, JBL B460, Sumo Delilah active crossover, WireWorld Silver Eclipse audio interconnects, WireWorld Starlight and Silver Starlight Coaxial Digital interconnects, Wireworld SuperNova 7 Toslink digital interconnect, WireWorld Aurora 7 and Silver Electra Power cords, Wireworld Silver Eclipse 8 speaker cables, Terk AF-1 Powered Antenna, PS Audio Direct Stream Power Plant 12, Oppo UDP-205 4K Blu-Ray Player, Bryson BUC-1 USB Converter, Wireworld Gold Starlight XLR Digital interconnect

Florida Room/Art Studio System: Pioneer PL-L1000 TT/Audio Technica ATS52W2, McIntosh: MR77, C32, MC2205; Crown Power Line Four, Wyred for Sound DAC-2 Digital to Analog converter, Soundcraftsmen AE2000 Eq, JBL 4313B's, JBL 2241-based Sub, JBL BX63A Active Crossover, Oppo BDP-105D Blu-Ray Player, Samsung 5500 Series 32" Smart TV, Terk AF-1 Powered Antenna

Master Bedroom System: McIntosh: MX120 Theater processor, MC206 6-channel amplifier; MR74 AM/FM Tuner, Oppo UDP-203 4K Blu-ray player, JVC HM-DH40000U D-Theater Digital VHS, Phase Technology PC80 Towers (now used as stands), (2) JBL 4401's, (1) JBL Studio 6IW speaker, (2) JBL Studio 6IC speakers, Sony XBR-49X900E UHD TV, Panamax 1000 Line Conditioner, (2) JL Audio E110 Subwoofers, Wireworld Solstice speaker cables, Wireworld Aurora Power cords, Wireworld Equinox and Solstice speaker cables and various other flavors of Wireworld and Audioquest cabling

Office System: Marantz 150 Tuner, Crown DL 2, Crown EQ 2, Crown SA 2, Crown D-75A (as headphone amp), McIntosh MCD7009 (as transport), DBX 3BX Series II, Oppo BDP-103 Blu-ray player, JBL 4401's, JL Audio E112 Subwoofer, Samsung 5500 series 32" Smart TV, Wire World Oasis audio interconnects, Wire World Solstice speaker cables, Wyred for Sound DAC-2 DSDse Digital to Analog converter, Wireworld Starlight Coaxial Digital Interconnect, Sennheiser HD800 Headphones, Sennheiser HDVA600 Headphone amp, Wireworld Silver Eclipse Balanced Interconnects, Wireworld Platinum Starlight USB Cable

High Resolution Source: HP Omen 17" Gaming Laptop
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  #28  
Old 11-30-2011, 01:24 AM
longgone longgone is offline
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Hi Pete, my 78 is in a cabinet and I wasn't certain if I was thinking about that switch being on the 78 or maybe even another Mac unit (I have a C27 and a 2205). Pretty cool idea (the switch)? It's been a while since I played with that switch and since you mention it's function I remember as you described. You have a beautiful MR78. Nice work. I super like mine! I also have some 1.2's and does that 78 ever sound nice! Hard to turn it off ... losing sleep ... heh heh.
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  #29  
Old 11-30-2011, 02:39 AM
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Quote:
Originally Posted by longgone View Post
Hi Pete, my 78 is in a cabinet and I wasn't certain if I was thinking about that switch being on the 78 or maybe even another Mac unit (I have a C27 and a 2205). Pretty cool idea (the switch)? It's been a while since I played with that switch and since you mention it's function I remember as you described. You have a beautiful MR78. Nice work. I super like mine! I also have some 1.2's and does that 78 ever sound nice! Hard to turn it off ... losing sleep ... heh heh.
Yes, the switch is a cool idea, though I always leave it on the "bright" setting. I also have an MC2205 in my Florida room with a C32 and MR77. Love that vintage McIntosh gear!

Pete
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Pete

No. 35


Main System: Harmon Kardon T60 TT/Ortofon 2M Black, McIntosh: MR78, MCD1000 Transport on Stillpoint ultra minis, MDA1000 D/A Converter on Stillpoint ultra minis, MS750 Music Server on Rollerblock Jr's, C40, MC501's (3), Soundcraftsmen: DC2215 Eq/AS1000 Real time analyzer, DBX 3BX II, Carver C9, Nakamichi Dragon, Crown SX724, Crown D-75A (as headphone amp), Sony XBR55X900E 4K TV, JBL L220A's, JBL B460, Sumo Delilah active crossover, WireWorld Silver Eclipse audio interconnects, WireWorld Starlight and Silver Starlight Coaxial Digital interconnects, Wireworld SuperNova 7 Toslink digital interconnect, WireWorld Aurora 7 and Silver Electra Power cords, Wireworld Silver Eclipse 8 speaker cables, Terk AF-1 Powered Antenna, PS Audio Direct Stream Power Plant 12, Oppo UDP-205 4K Blu-Ray Player, Bryson BUC-1 USB Converter, Wireworld Gold Starlight XLR Digital interconnect

Florida Room/Art Studio System: Pioneer PL-L1000 TT/Audio Technica ATS52W2, McIntosh: MR77, C32, MC2205; Crown Power Line Four, Wyred for Sound DAC-2 Digital to Analog converter, Soundcraftsmen AE2000 Eq, JBL 4313B's, JBL 2241-based Sub, JBL BX63A Active Crossover, Oppo BDP-105D Blu-Ray Player, Samsung 5500 Series 32" Smart TV, Terk AF-1 Powered Antenna

Master Bedroom System: McIntosh: MX120 Theater processor, MC206 6-channel amplifier; MR74 AM/FM Tuner, Oppo UDP-203 4K Blu-ray player, JVC HM-DH40000U D-Theater Digital VHS, Phase Technology PC80 Towers (now used as stands), (2) JBL 4401's, (1) JBL Studio 6IW speaker, (2) JBL Studio 6IC speakers, Sony XBR-49X900E UHD TV, Panamax 1000 Line Conditioner, (2) JL Audio E110 Subwoofers, Wireworld Solstice speaker cables, Wireworld Aurora Power cords, Wireworld Equinox and Solstice speaker cables and various other flavors of Wireworld and Audioquest cabling

Office System: Marantz 150 Tuner, Crown DL 2, Crown EQ 2, Crown SA 2, Crown D-75A (as headphone amp), McIntosh MCD7009 (as transport), DBX 3BX Series II, Oppo BDP-103 Blu-ray player, JBL 4401's, JL Audio E112 Subwoofer, Samsung 5500 series 32" Smart TV, Wire World Oasis audio interconnects, Wire World Solstice speaker cables, Wyred for Sound DAC-2 DSDse Digital to Analog converter, Wireworld Starlight Coaxial Digital Interconnect, Sennheiser HD800 Headphones, Sennheiser HDVA600 Headphone amp, Wireworld Silver Eclipse Balanced Interconnects, Wireworld Platinum Starlight USB Cable

High Resolution Source: HP Omen 17" Gaming Laptop
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