Luxman Integrated Amplifier L550 ("L-550") Capacitor Replacement in the Power Supply
The genuine capacitors are ELNA, "Special Made for Audio". The value are 30000 uF (30.000uF) and 50V.
Now my Problem:
The sizes (ratio between height to diameter) is unusual: 63-65mm diameter, 80mm height (industry standart is 100 mm height by a diameter of 63 until 65 mm).
There are no additional space to use larger types - have a look to the second image of opened amp device about
http://audio-database.com/LUXMANALPINE-LUXMAN/amp/l-550-e.html
Are there any vintage caps with screw terminal from Sprague, Mallory, Rifa or Nippon Chemicon in the size 63x80mm ?
Capacity isn't important (at least 10.000 uF) but the ESR must be as low as possible. The rated voltage shold be 63V or 100V.
Thank you for advices.
The genuine capacitors are ELNA, "Special Made for Audio". The value are 30000 uF (30.000uF) and 50V.
Now my Problem:
The sizes (ratio between height to diameter) is unusual: 63-65mm diameter, 80mm height (industry standart is 100 mm height by a diameter of 63 until 65 mm).
There are no additional space to use larger types - have a look to the second image of opened amp device about
http://audio-database.com/LUXMANALPINE-LUXMAN/amp/l-550-e.html
Are there any vintage caps with screw terminal from Sprague, Mallory, Rifa or Nippon Chemicon in the size 63x80mm ?
Capacity isn't important (at least 10.000 uF) but the ESR must be as low as possible. The rated voltage shold be 63V or 100V.
Thank you for advices.
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Thank you. Interesting offer in generall, unfortunately not in this matter. I repeat the wanted sizes:
63-65mm diameter, 80mm height
100mm height like that one from your URL (by the same diameter) is very easy to find.
Perhaps I must ceate a new cover for the L550 with circle cutouts, so that protrudes a small portion of the capacitor height.
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how about 35mm X80H - ECE-T1KA103EA Panasonic Electronic Components Aluminum Electrolytic Capacitors - Snap In
Or .. 40mm X 80mm
ECE-T1KA153FA Panasonic Electronic Components Aluminum Electrolytic Capacitors - Snap In
all 4- pin 22mm lead spacing.
check mouser lots of 50v - but out of stock on many >20,000uf.
OS
Or .. 40mm X 80mm
ECE-T1KA153FA Panasonic Electronic Components Aluminum Electrolytic Capacitors - Snap In
all 4- pin 22mm lead spacing.
check mouser lots of 50v - but out of stock on many >20,000uf.
OS
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How strange. I am looking for the exact same thing, for the same amp. I am thinking about this: 22,000uF
Elektrolytkondensatoren mit Schraubausführungen, GT2W227M35060SB, GT2W477M35100SB, GT2W108M51100SB, GT2W228M64120SB, GL2W228M64110SB, GF2H228M64110SB, GT2W338M76120SB, GL2W338M76110SB, GF2H338M76140SB, GT1J478M35060SB, GT2A478M35060SB, GT2W478M76160
Elektrolytkondensatoren mit Schraubausführungen, GT2W227M35060SB, GT2W477M35100SB, GT2W108M51100SB, GT2W228M64120SB, GL2W228M64110SB, GF2H228M64110SB, GT2W338M76120SB, GL2W338M76110SB, GF2H338M76140SB, GT1J478M35060SB, GT2A478M35060SB, GT2W478M76160
35 or 40 mm diameter instead 65 mm ???
Have a look to the ESR values and compare to that one at bottom mentioned versions, that I have found by chance.
Additional question: - how I explain and justify this smaller cap versions with higher ESR values to the owner of this amp ?
65x80mm outline I have found by chance about
Krummer-Kondensatoren
with follow order codes:
800HCA100223Q065080F
801LLA063333Q065080F
801LLA100183Q065080F
and about
Electrolytic capacitor with screw terminals - FTCap Fischer & Tausche Capacitors Group
(FTcap G/GM/GMX Series) follow order codes:
39306365080
22308065080
18310065080
47306365080
39308065080
18310065080
The ESR in general is better by FTcap.
I ask both companies about suppliers for small quantities like Bürklin or mouser and wait to the replies.
If the ESR is low enough, 10.000uF is enough, too. I want to use 100V. Here I get 18.000 uF.
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I found a perfect one! This is what I'll personally get:
Mundorf MLytic 22000uF 63V :: M-Lytic Series :: Mundorf :: Electrolytics :: Capacitors :: Passive Components :: Electronic Parts :: Banzai Music
Mundorf MLytic 22000uF 63V :: M-Lytic Series :: Mundorf :: Electrolytics :: Capacitors :: Passive Components :: Electronic Parts :: Banzai Music
Only from the electrical view a good choice (except the temperature range -I would like to use at least 105 degrees) but not from the mechanical view.
Yes - but one device from EPCOS meets both requirements - temperature and sizes. only capacity value is lower: 15mF and 10mF instead 33mF. Here my small overview:
1) Nippon Chemi-Con 85 degrees
E36D630HPN473MD79M (Nippon Chemicon) Maße: 63,5x79,4 (2,5x3,125) 47m/63
ESR/Ripple-Current 9,3/11,86
E36D101HPN183MD79M (Nippon Chemicon) Maße: 63,5x79,4 (2,5x3,125) 18m/100
ESR/Ripple-Current 11,2/10,83
go to
http://theelectrostore.com/datasheets/U36D_Web-(E36D).pdf
unfortunately not to find about
http://www.chemi-con.com/
2) Vishay/Sprague 85 degrees
36DY103F100CB2A 10m/100 ESR-Ripple-Current 14,8/14,5
http://de.mouser.com/ProductDetail/...GAEpiMZZMukHu%2bjC5l7YTZXHap/aor83xoouDTgfHA=
http://www.mercateo.com/p/139N-1600...000UF_100V_SCREW_Cap_Typ_36DY103F100CB2A.html
http://www.newark.com/vishay-sprague/36dy103f100cb2a/capacitor-alum-elect-10000uf-100v/dp/66C7762
36DY223F075CB2A 22m/75
http://de.mouser.com/Search/ProductDetail.aspx?qs=v4Zbu0/G7fJCHNQJF/GIRQ==
http://www.mercateo.com/p/139N-1600...000UF_75V_SCREW_Capa_Typ_36DY223F075CB2A.html
http://us.element14.com/vishay-sprague/36dy223f075cb2a/capacitor-alum-elect-22000uf-75v/dp/66C7791
http://www.vishay.com/docs/42065/36dy.pdf (data sheet)
3) EPCOS Sikorel (formerly Siemens) 105 degrees
B41550E8159Q000 15mF/63V
B41550E9109Q000 10mF/100V
ESR/Ripple-Current 14/32
http://docs-europe.electrocomponents.com/webdocs/0026/0900766b80026ac4.pdf
available only with threaded stud by RS as B41570E9109Q
http://uk.rs-online.com/web/p/products/1909100/
http://de.rs-online.com/web/p/products/1909100/
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This I have overlooked and perhaps the best choice:
EPCOS Sikorel 125 degrees 15mF/63V and 10m/100V
15000 64.3 × 80.7 6.0 15 11 40 31 11 B41554E8159Q000
10000 64.3 × 80.7 7.0 15 14 40 30 11 B41554E9109Q000
http://www.epcos.com/inf/20/30/db/aec_2011/B41554.pdf
http://pdf1.alldatasheet.com/datasheet-pdf/view/326786/EPCOS/B41554E9109Q000.html
EPCOS Sikorel 125 degrees 15mF/63V and 10m/100V
15000 64.3 × 80.7 6.0 15 11 40 31 11 B41554E8159Q000
10000 64.3 × 80.7 7.0 15 14 40 30 11 B41554E9109Q000
http://www.epcos.com/inf/20/30/db/aec_2011/B41554.pdf
http://pdf1.alldatasheet.com/datasheet-pdf/view/326786/EPCOS/B41554E9109Q000.html
Fischer & Tausche (ftcap) offered us a custom made version with 10mF/100V as remaining stock with similar datas for ESR than this EPCOS type:
10000 64.3 × 80.7 7.0 15 14 40 30 11 B41554E9109Q000
and in the size 65,3x80mm:
After removing the genuine ELNA caps with 33mF I perform a exact soundcheck with an old second L550 device in original condition. The result:
The caps from FT sounds much more better more details, much more exactly bass transmission) despite the fact, that capacity is only one third of the old value.
Thus the capacity value isn't critical, but the ESR: the lower the value, the better.
10000 64.3 × 80.7 7.0 15 14 40 30 11 B41554E9109Q000
and in the size 65,3x80mm:
After removing the genuine ELNA caps with 33mF I perform a exact soundcheck with an old second L550 device in original condition. The result:
The caps from FT sounds much more better more details, much more exactly bass transmission) despite the fact, that capacity is only one third of the old value.
Thus the capacity value isn't critical, but the ESR: the lower the value, the better.
I think, 30.000uF (30mF) was the imprint.
Whether the improvement in sound alone due to the new condition has come, isn't clearly to say, because this ELNA devices are no longer available in new condition for investigate this exactly.
In general - there are 40 year old electrolytic capacitors in almost virgin state (e. g. the non exist German brand "FRAKO" but also certainly types of Siemens), even when used at high ambient temperatures.
Otoh - in most cases the caps are strongly aged (e. g. dried up), even if they were not used (i.e. through the store alone).
This experience I haven't make only by low costs versions, but also by BHC T-POWER - go to
http://www.schuro.de/Daten/BHC/ALN20S.pdf
for data sheet.
Therefore I can not recommend this type, special developed for audio amplifier power supplies (in general - I hate parts, especially electrolytic and foil caps, special made for audio).
Each version for typical industry applications with screw terminals is always the better choice.
Check in this case this thread:
http://www.diyaudio.com/forums/parts/151392-best-electrolytic-capacitors.html
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Now I have a second device of this model (lLxman L550) for repair. There is an offset (33V) at the speaker output. I have find out, that the plugged front-End PCB isn't the reason, also not the output power BjT devices in the MT-100 outline.
The reason is the sub-PCB with follow parts:
- idle current adjustment with the associated parts for temperature compensation,
- driver transistors (TO-220 outline, first stage of discrete darlington output buffer mounted on small silver heatsink)
Now the question:
how I remove this PCB (way for disass'y with shortest amount of steps wanted) ??
Thank you for your advices.
The reason is the sub-PCB with follow parts:
- idle current adjustment with the associated parts for temperature compensation,
- driver transistors (TO-220 outline, first stage of discrete darlington output buffer mounted on small silver heatsink)
Now the question:
how I remove this PCB (way for disass'y with shortest amount of steps wanted) ??
Thank you for your advices.
NJL5160D (NJL5160, NJL 5160 D, NJL 5160D) from Japan Radio Company (JRC) and misprint
With this device I have much more trouble than with that one mentioned under the earlier posts.
Follow problems I have:
1) there is an IC from JRC in use, that I don't know, which internal function there is present (perhaps an Optocoupler ? )
The only helpful proposals from Google is follow:
Luxman L-550 [?????] - ????? STALKER-Lab
currently similar type (no replacement) perhaps follow:
http://www.vishay.com/docs/83740/sfh617a.pdf
Who can post a data sheet ?
2) Obviously there are several mistprints in the schematic - go to
http://www.hifiengine.com/manuals/luxman/l-550.shtml
the pin numbers from the connections between the front-end PCB and the Vbe/protect PCB must be wrong, when I assume, that the individual number of one end go to the same number of the other (please note, that the first stage of the Super Beta Follower is located at the front end PCB).
Thus I work out follow connections:
A. VBE multiplier idle current:
PIN 23 front end PCB to 25 Vbe/protect PCB upper end
PIN 22 front end PCB to 23 Vbe/protect PCB lower end
B. Super Beta Follower - connection between first stage to second stage
PIN25 front end PCB to 24 second stage upper part
PIN24 front end PCB to 23 second stage lower part
What I might have overlooked ??
With this device I have much more trouble than with that one mentioned under the earlier posts.
Follow problems I have:
1) there is an IC from JRC in use, that I don't know, which internal function there is present (perhaps an Optocoupler ? )
The only helpful proposals from Google is follow:
Luxman L-550 [?????] - ????? STALKER-Lab
currently similar type (no replacement) perhaps follow:
http://www.vishay.com/docs/83740/sfh617a.pdf
Who can post a data sheet ?
2) Obviously there are several mistprints in the schematic - go to
http://www.hifiengine.com/manuals/luxman/l-550.shtml
the pin numbers from the connections between the front-end PCB and the Vbe/protect PCB must be wrong, when I assume, that the individual number of one end go to the same number of the other (please note, that the first stage of the Super Beta Follower is located at the front end PCB).
Thus I work out follow connections:
A. VBE multiplier idle current:
PIN 23 front end PCB to 25 Vbe/protect PCB upper end
PIN 22 front end PCB to 23 Vbe/protect PCB lower end
B. Super Beta Follower - connection between first stage to second stage
PIN25 front end PCB to 24 second stage upper part
PIN24 front end PCB to 23 second stage lower part
What I might have overlooked ??
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HAving worked on various Luxman amps in this series I have a strong suspicion that the caps were deliberately marked with higher capacitances tgan were actually in use, and not by a small amount. This was the age of 'overcapping' and I would not be surprised at this but am surprised Luxman did it.
Two things to keep in mind:
1) these are class A amps, therefore heat is an issue, use 106C caps in the power supply - originals might have been specified for 85C but this is normal as 105C was extremely exotic then. The power supply rails are fairly low since these are 50WPC into 8 ohms. Why use 63 or 100V caps, this leaves you wuth a much lower capacitance. That being said, with high capacitance it comes down to the transformer and rectifiers. Noise and stray fields WILL affect sound.
2) Luxman of that era had a general problem with heat, u.e. rather hot running active components, on combination with basic FR2 phenolic base boards and trying to save on solder. Even if the amp works before a rebuild, RESOLDER EVERYTHING. Check all joints very carefully, as they might appear just fine, only to have a component literally fall out of a PCB at the slightest attempt of movement! YES I have had this literally happen, with TO126 and TO220 transistors soldered without heatsinks, large caps and resistors, including a bias transistor on a separate small board! This sort of thing may be the reason for the malfunction you have in your amp.
Two things to keep in mind:
1) these are class A amps, therefore heat is an issue, use 106C caps in the power supply - originals might have been specified for 85C but this is normal as 105C was extremely exotic then. The power supply rails are fairly low since these are 50WPC into 8 ohms. Why use 63 or 100V caps, this leaves you wuth a much lower capacitance. That being said, with high capacitance it comes down to the transformer and rectifiers. Noise and stray fields WILL affect sound.
2) Luxman of that era had a general problem with heat, u.e. rather hot running active components, on combination with basic FR2 phenolic base boards and trying to save on solder. Even if the amp works before a rebuild, RESOLDER EVERYTHING. Check all joints very carefully, as they might appear just fine, only to have a component literally fall out of a PCB at the slightest attempt of movement! YES I have had this literally happen, with TO126 and TO220 transistors soldered without heatsinks, large caps and resistors, including a bias transistor on a separate small board! This sort of thing may be the reason for the malfunction you have in your amp.
Yes there are many reasons this amplifier is being rebuilt....but at the moment I am interested to know what the NJL5160D IC is doing on board PB 1400-2, There are two of these boards and i have had to replace both IC's due to capacitor glue eating the legs away....
Thing is I am not that confident in the part source and i can not find a data sheet on this part....
I not the OP has spoken of this, but thats where the thread trailed off...
Thing is I am not that confident in the part source and i can not find a data sheet on this part....
I not the OP has spoken of this, but thats where the thread trailed off...
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