Logic DM101 - a new beginning
- Fretless
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Logic DM101 - a new beginning
It's big.
It's black.
It's seriously heavy.
It's out of the attic with 20 years dust scraped off it
and ....
It's off to the repair shop to fix the electronics.
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 - SSP - LS6+ Sabaj A10a {x2)
Little Bear MC2 + AQ NightHawk
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 & PSU - BMUAiyima A07 MAX + Arcam One
HP: Allo DigiOne + Sabaj A10d + AQ NightOwl
Office: Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith 887 + German Maestro GMP 450
- Lindsayt
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Re: Logic DM101 - a new beginning
The repair shop being your spare room or garage or garden shed?
Surely it will have relatively simple electronics?
Have you tried plugging it in to see if it will spin OK?
What condition is the drive belt in? It could be fine or it could be perished.
Oil in the bearing?
I predict it will sound more alive and dynamic than your Pro-ject Debut 2...
Surely it will have relatively simple electronics?
Have you tried plugging it in to see if it will spin OK?
What condition is the drive belt in? It could be fine or it could be perished.
Oil in the bearing?
I predict it will sound more alive and dynamic than your Pro-ject Debut 2...
- Fretless
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Re: Logic DM101 - a new beginning
Belt is fine, bearings are good. All rather surprising actually.
I have had it plugged in this morning - the motor doesn't spin but there is a vibration as if power is going to the motor. even when the speed control is set to off.
This is why I replaced it with the Debut.
Just had the electronics out for inspection and checked the fuse - which is OK.
It's going to my local Hifi shop who have a good repair service (and cheap).
I have had it plugged in this morning - the motor doesn't spin but there is a vibration as if power is going to the motor. even when the speed control is set to off.
This is why I replaced it with the Debut.
Just had the electronics out for inspection and checked the fuse - which is OK.
It's going to my local Hifi shop who have a good repair service (and cheap).
- These users thanked the author Fretless for the post (total 2):
- Latteman (Sat May 22, 2021 8:55 am) • Tony Moore (Sat May 22, 2021 10:03 am)
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 - SSP - LS6+ Sabaj A10a {x2)
Little Bear MC2 + AQ NightHawk
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 & PSU - BMUAiyima A07 MAX + Arcam One
HP: Allo DigiOne + Sabaj A10d + AQ NightOwl
Office: Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith 887 + German Maestro GMP 450
- Lindsayt
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Re: Logic DM101 - a new beginning
Sounds like a case of checking what electrical supply the motor should be receiving and testing to see if it's getting that.
Which should be quick and simple enough for the shop to do and then it's a case of sorting out the motor power supply or the motor or both.
Which should be quick and simple enough for the shop to do and then it's a case of sorting out the motor power supply or the motor or both.
- CN211276
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Re: Logic DM101 - a new beginning
I recall the Logic being highly regarded in the 80s, but like others such as the Pink Triangle, System Deck, JBE, Ariston etc, the hifi press insisted that the LP12 was superior.
Main System
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NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
- Fretless
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Re: Logic DM101 - a new beginning
The Hifi press were wrong!
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 - SSP - LS6+ Sabaj A10a {x2)
Little Bear MC2 + AQ NightHawk
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 & PSU - BMUAiyima A07 MAX + Arcam One
HP: Allo DigiOne + Sabaj A10d + AQ NightOwl
Office: Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith 887 + German Maestro GMP 450
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Re: Logic DM101 - a new beginning
Iirc the board in there is similar to the board in the axis, has an oscillator to alter the frequency to get 33 and 45. If it is making the motor vibrate when simply plugged in something is open circuit. The Motor is probably getting half a sinewave making it jolt, hence the vibration. Its a clock motor same as lp12, thorens rega et al, it is not a simple board.
Not really a diy fix unless you plan to replace everything. Perhaps a full re-cap would do it,. Youd need a scope to see what the motor is getting off the board. There were several variations of boards over the years, so it needs some thorough investigation
Not really a diy fix unless you plan to replace everything. Perhaps a full re-cap would do it,. Youd need a scope to see what the motor is getting off the board. There were several variations of boards over the years, so it needs some thorough investigation
Analogue: oracle delphi sme 309, jbe series 3 cx unipivot dv20x2l, roksan xerxes tabriz vm750, jvc ql-y5f rigb at440, jvc ql-y3f vm750, lenco 75, technics sl150
Phono stages: cole lcr, benedict audio hothead
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Phono stages: cole lcr, benedict audio hothead
Digital: cyrus cd7, wiim mini x2, topping e30, jds labs el dac 2+
Amplification: nelson pass b1, nelson pass f5
Speakers: 15" fane aperiodic wardrobes
Cans: myryad z40, hifiman sundara + deva, fostex t50rp, sennheiser momentum on ear +over ear, b&w p5 and p7
- Fretless
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Re: Logic DM101 - a new beginning
I took it into the shop this morning. They have a professional repair service and I am confident they can sort it out.
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 - SSP - LS6+ Sabaj A10a {x2)
Little Bear MC2 + AQ NightHawk
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 & PSU - BMUAiyima A07 MAX + Arcam One
HP: Allo DigiOne + Sabaj A10d + AQ NightOwl
Office: Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith 887 + German Maestro GMP 450
- Neonknight
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Re: Logic DM101 - a new beginning
Servicing the Logic makes the most sense! I bet it will be a fine table again with a bit of attention and a nice cartridge bolted up to it.
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- Fretless (Sun May 23, 2021 8:44 am)
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