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Luxman L-100U Recap

How about putting the fuses back in? Yours is the only one I have seen where the output fuses have been removed. Someone must have modified it before you got it.

Steve.
 
Yes, another Luxman product that needed some thermal engineering along the way. Did you lift the resistors above the board a bit to lower their operating temp? I did that with the MB-3045 amps I repaired. Lots of Luxman gear seems to need this kind of help.

Are there other brands that have as many burned up boards as Luxman? I just don't think they had the Thermal Engineering Dept that other companies had.
 
How about putting the fuses back in? Yours is the only one I have seen where the output fuses have been removed. Someone must have modified it before you got it.

Steve.
This is how I got this...This was a 1 owner and Never was in for service. I have a R-1040 and R-1050 that also came this way. Seems a Factory Mod.

Yes, another Luxman product that needed some thermal engineering along the way. Did you lift the resistors above the board a bit to lower their operating temp? I did that with the MB-3045 amps I repaired. Lots of Luxman gear seems to need this kind of help.

Are there other brands that have as many burned up boards as Luxman? I just don't think they had the Thermal Engineering Dept that other companies had.
Oh yes I have lifted this up. I do see this in Luxman more. Another reason I go over these Very Well and replace what I do not like.
 
Joe always enjoy your work, preparation and study before a rebuild, and the work and result. You seem to work on a wide range of audio. Just wanted to add my 2 cents on some films you may like to try if not on this project maybe a future one. I have messed with over 20 brands and types of films with listening included in some of my Marantz projects. Surely everyone has their favorites:

I really like these and they are not crazy expensive or huge to the point they will not fit anywhere.

Sonicap Gen I
RealCap RT's (Michael Percy)
Where a Wima MKP10 will not fit Wima MKS4 are very nice.
 
You are diving deep my man.
I hear you...Going over the info on L-100U these 2 parts come up as BAD overtime. VD1221 diodes and 2SC1345 transistor. Since I have the boards apart these are being replaced.

Joe always enjoy your work, preparation and study before a rebuild, and the work and result. You seem to work on a wide range of audio. Just wanted to add my 2 cents on some films you may like to try if not on this project maybe a future one. I have messed with over 20 brands and types of films with listening included in some of my Marantz projects. Surely everyone has their favorites:

I really like these and they are not crazy expensive or huge to the point they will not fit anywhere.

Sonicap Gen I
RealCap RT's (Michael Percy)
Where a Wima MKP10 will not fit Wima MKS4 are very nice.
Thanks Pat...Going over your Marantz 2230 "Throw Down" and 2220B thread looking what you have done...Nice Write-Ups!!!

Once I get the Caps, Diodes and Transistor replaced with around 100hrs of burn-in...then I will look into the Films. As you know...This can change the Sound...Going SLOW on this one with Lots of triple checking.

Now I have used MUNDORF Supreme in Lux LE-109 Phono Preamp(http://www.audiokarma.org/forums/attachment.php?attachmentid=462606&d=1382059941) and these are Worth the $$'s.
 
Now I have used MUNDORF Supreme in Lux LE-109 Phono Preamp(http://www.audiokarma.org/forums/att...6&d=1382059941) and these are Worth the $$'s.
__________________

Of the many I have listened to the Supreme caps are awesome. Used in the right places they give you a peek into high end sound with real body behind the singers along with amazing dimensionality. If you enjoy what they do that is really special sonically you will take the time to get them to fit in the most importiant signal path locations, they play very well with the real cap RT's.
 
PB-649 Power Board is Done...Bourns Trimmers will be added After 100hr Burn-In with the Testing of Films (will be adding to the List).

Next, PB-636 Equalizer Board
 

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Looked over the Thread...Thanks.

EchoWars..."The BC550C will be fine (but, like the Zetex transistor, the pinout is different from the original 2SC1345, which is BCE, and the Zetex and On-Semi is EBC, so pay attention!)"

2SC1345 will be Replaced with BC550CTA

I will now be ordering my Parts.
Ready to start and going over the Equalizer Board...the replacement Transistors have different pin outs.

Original Hitachi 2SC1345 pin outs: 1.Emitter 2. Collecter 3. Base

Fairchild BC550CTA pin outs: 1. Collector 2. Base 3. Emitter

Need to "Criss Cross Applesauce" the Collecter and Base for BC550CTA
 

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PB-636 Equalizer Board is Done...The Filters will be done after 100hrs of Burn-In.

Next Up...PB-638 Touch Mute/Filter Board. "16" 2SC1345, "16" Tantalum, "1" Diode and "6" Caps.

Will start this Friday.
 

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Picture of PB-638 Touch Mute/Filter Board

Starting this know.
 

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2SC1345 a transistor that was used by the truck load at Lux Corp when they built the C-1000, C1010, L100 and L110 units. I have not done the tants or the 1345s in the C-1000 but did replace most of the other 'lytics. Haven't done the two big caps in that preamp yet. Sounds much better.
 
2SC1345 a transistor that was used by the truck load at Lux Corp when they built the C-1000, C1010, L100 and L110 units. I have not done the tants or the 1345s in the C-1000 but did replace most of the other 'lytics. Haven't done the two big caps in that preamp yet. Sounds much better.
WOW...I thought it would never end..:sigh:

PB-638 Touch Mute/Filter Board is done.

Next up a nice simple...PB-645 Winker
 

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Picture of the PB-640 Flat Amp

Going to take care of this later today.
 

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