Capacitors for Linn Linto phono stage Recap

The Main PCB is officially dead :-(
The PCB copper stripes under the smd caps pealed like hell. They were manufactured thin as atoms.
The upgraded Linto power supply works fine and tested and is up for sale ...

I had an old Linto that I really liked, but when it went several techs refused to work on it. Now I see why. 

The caps arrived. 

Replacing the regular ones (even though they need double sided sodering) went smooth. The SMD caps are a nightmare to remove. I removed 4 and 2 of them cracked the pcb lines and I had to connect the caps with wires., No matter how gentle I am its a nightmare.

The PCB is so delicate...

I had a great teacher ;-)
It will take the parts 2 weeks to arrive, I'll assemble them and report the result...

YES! Go ahead, you did a great job for the capacitors selection! 👍👍

"IMO, if you want those radial capacitors sat nicely on the PCB, lead spacing is important, and its diameter as well. Newer capacitors for the same rating tend to be smaller, you can choose higher voltage rating capacitors to match the existing space."
I tried to search higher voltages caps but all were too large or too tall. The Large caps in the brilliant PS are very tight and only the one I chose will fit in. I'll carefully improvise a horizontal twist in the leads so they fit in...

"For surface mount capacitors, "land space" is very important! Please measure the existing space to ensure the replacements can sat and soldered properly."
I compared height and diameter of the barrels of the 2 SMD types I want to purchase and they match the dimensions of the 2 SMD types I have in my Linto.

"If size is permitted, you may also consider Nichicon PCX series for its excellent ESR and Ripple Current rating."
Unfortunately these are way bigger than the ones on my Linto

I guess at this point, I should go ahead and order what I listed, right ?

@triskadecaphobic

You did a great job for the capacitors selection! 👍👍

Some suggestions:

IMO, if you want those radial capacitors sat nicely on the PCB, lead spacing is important, and its diameter as well. Newer capacitors for the same rating tend to be smaller, you can choose higher voltage rating capacitors to match the existing space.

For surface mount capacitors, "land space" is very important! Please measure the existing space to ensure the replacements can sat and soldered properly.

If size is permitted, you may also consider Nichicon PCX series for its excellent ESR and Ripple Current rating.

https://www.digikey.co.il/en/products/detail/nichicon/PCX1H220MCL1GS/2791250

https://www.digikey.co.il/en/products/detail/nichicon/PCX1H220MCL6GS/2791249

IMHO, YMMV. 🤞

imhififan,

I made a final list with purchase links and (99%) matching dimensions. Please approve it :-)

1) 4 X Rubycon 105c 200v 220uF 9030aw:
The original caps are MXR series which are no longer available and had a lead gap of 10mm
https://pdf1.alldatasheet.com/datasheet-pdf/view/145362/RUBYCON/MXR.html
This one is actually much better rated and has a narrower leads gap of 7.5mm (non issue in my opinion)
https://www.digikey.co.il/en/products/detail/rubycon/200TXW220MEFR18X25/11312650
12000 hrs at 105c
Leads gap in spec : 7.5mm

2) 20 X Longlife RSH 105c 35v 100uF 9940
https://www.digikey.co.il/en/products/detail/nichicon/UPX1V101MPD1TD/4321159
20000 Hrs @ 105°C
Leads gap in spec : 5mm

3) 2 X h4
2.2
50v
https://www.digikey.co.il/en/products/detail/vishay-beyschlag-draloric-bc-components/MAL215371228E3/5635587?s=N4IgTCBcDaILIEEAyYCMBWAzAdlWMAHAKKYgC6AvkA
2000 Hrs @ 105°C
Dia (4.00mm)
Height (5.30mm)

4) 22 X J1
22
50v
4000 Hrs @ 125°C
https://www.digikey.co.il/en/products/detail/panasonic-electronic-components/EEH-ZC1H220P/3088067?s=N4IgTCBcDaIKJwBIC0DCBGRYwAYAKIAugL5A
Dia (6.30mm)
Height (6.10mm)

5) SG230 Thermistor
https://www.digikey.co.il/en/products/detail/ametherm/SG230/4862363

As for Tantalum SMD caps, they only come in box shape and I wasn’t able to find them in the cylinder shape I need.

I think it's better to address the power supply issue first.

If you suspect the thermistor causing the problem, install a new one and test if the problem goes away, then go recap the power supply.

If everything goes well, then go ahead to recap the phono board.

Of course they need to resemble in form to the ones I have in order to fit the Linn Linto PCB…

Totally agree! Measure the size and lead spacing of the existing caps, then choose the longest life with highest temperature rating. A capacitor with service life of 3000hrs@105°C is equal to 12000hrs@85°C.

For those smd electrolytic caps, tantalum capacitor is better if money is no object.

By the way imhififan,
I have a problem with my Linto : It stops working after 30 minutes of work. When it gets cold it works again for 30 minutes. So I guess it wouldn’t hurt to replace the thermistor as well, to be on the safe side, right ?

5) SG230 Thermistor
https://www.digikey.co.il/en/products/result?s=N4IgTCBcDaIM4HMwGYAMIC6BfIA

Thanks imhififan.
So we have the shopping list of 48 caps below…
I added a link for each cap type with search results. I would appreciate it if you can recommend or link to any specific one that you prefer (if there is one in my search at all. If there isn’t please link to one…).
Of course they need to resemble in form to the ones I have in order to fit the Linn Linto PCB…

1) 4 X Rubicon 105c 200v 220uF 9030aw
https://il.farnell.com/c/passive-components/capacitors/aluminium-electrolytic-capacitors?st=105c+200v+220uf

2) 20 X Longlife RSH 105c 35v 100uF 9940
https://il.farnell.com/c/passive-components/capacitors/aluminium-electrolytic-capacitors/leaded-aluminium-electrolytic-capacitors?st=rsh%2B105c%2B35v%2B100uf

3) 2 X h4

            2.2
            50v
https://il.farnell.com/w/c/passive-components/capacitors/aluminium-electrolytic-capacitors?st=22%2050v%20smd&gs=true

4) 22 X J1
              22
              50v
https://il.farnell.com/w/c/passive-components/capacitors/aluminium-electrolytic-capacitors?st=22%2050v%20smd&gs=true

1 X Yellow+ Black ?? (see picture. Are these Non-Polarized Capacitors ? do they need replacement too ?)

I think the yellow one is a varistor and the black one is a thermistor. If not defective, leave it as it is.

2 X Red ones ?? (see picture. Are these Non-Polarized Capacitors ? do they need replacement too ?)

These are poly caps and will not degraded over time, if not defective, leave it as it is.

2 X the following. what are these values ? doesn’t fit the notation shown in a post above ?

h4
2.2
50v

These two are 2.2uF 50V smd electrolytic caps.

22 X the following. what are these values ? doesn’t fit the notation shown in a post above ?
J1
22
50v

Those are 22uF 50V smd electrolytic caps.

🤞

Hi,
I made a preliminary list of all the caps.
Please see questions below…

Power supply:
1) 4 X Rubicon 105c 200v 220uF 9030aw
2) 6 X Longlife RSH 105c 35v 100uF 9940
3) 1 X Yellow+ Black ?? (see picture. Are these Non-Polarized Capacitors ? do they need replacement too ?)
4) 2 X Red ones ?? (see picture. Are these Non-Polarized Capacitors ? do they need replacement too ?)


Main PCB:
5) 14 X Longlife RSH 105c 35v 100 uF 9940

6) 2 X the following. what are these values ? doesn’t fit the notation shown in a post above  ?

h4
2.2
50v

7) 22 X  the following.  what are these values ? doesn’t fit the notation shown in a post above  ?
J1
22
50v


https://drive.google.com/file/d/1RQzxSNFjs_zfyOu5ffEIckL6mL3bTPbj/view?usp=sharing
https://drive.google.com/file/d/1XPWpMZOw5vClBavFDASyOVj1sHVLcoHL/view?usp=sharing
https://drive.google.com/file/d/1w0s4WOyRXBQrobobaWhNQD6V_Lryx_kb/view?usp=sharing
https://drive.google.com/file/d/1YxzJ0gX_B-MxyhmUq1iw0EXYbAjIjNcW/view?usp=sharing

https://drive.google.com/file/d/1q4r6NbcN6QGeKMvlWF8IfhWmEaoRBVlW/view?usp=sharing

Thanks

Where in the picture are the additional 24 smd electrolytic capacitors? 

@triskadecaphobic 

I found 22pcs of 22uF 50V smd electrolytic caps, except C501 and C601 which too small to read the value in your photo.

I counted 16 capacitors. Where in the picture are the additional 24 smd electrolytic capacitors? 

Thanks ! Will do !

Other than the 14 Capacitors in the attached picture, are there any other Capacitors that need changing ?

All the smd electrolytic capacitor ( total of 24 pcs ).

Which internet shop is reliable and sells only original parts ?

mouser.com and digikey.com come to mind.

Replace all the capacitors in the power supply section and see if you can match them with Nichicon and Audio Note.