Capacitors for Linn Linto phono stage Recap

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

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.

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.

@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. 🤞

"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 ?