Check my choices

[Jim P]

Tried to turn my CNC machine on last week, and got nothing. Checked and found low voltage on the main output. (5v)

Found a couple caps with high ESR and figured I would replace all the electrolytic caps.

This is on a Deltron 4 output power supply. (+5,+15,-15,+24.)

Thing was made in 1990, all the caps have 1990 date code on them.

Seems like none of the exact caps are made anymore because of the lead free rules.

So, based on the info I could find, and what Digi-key had in stock here are my choices:

Everything was rated 85c, 20% and 2000 hours.

1200uf, 200v had Nichicon LK, replace withVishay 157 PUM-SI
2200uf, 35v had Chemi-con SME, replace with Chemi-con SMG
1000uf, 35v had Elna RE, replace with Nichicon UKL
220uf, 35v had Elna RE2, replace with Nichicon UKL
4700uf, 10v had Elna RE2, replace with Nichicon UKL
100uf, 16v had Shoei ?, replace with Nichicon UKL

Thanks, Jim

[coreAngel]

Re: Check my choices

Tried to turn my CNC machine on last week, and got nothing. Checked and found low voltage on the main output. (5v)

Found a couple caps with high ESR and figured I would replace all the electrolytic caps.

This is on a Deltron 4 output power supply. (+5,+15,-15,+24.)

Thing was made in 1990, all the caps have 1990 date code on them.

Seems like none of the exact caps are made anymore because of the lead free rules.

So, based on the info I could find, and what Digi-key had in stock here are my choices:

Everything was rated 85c, 20% and 2000 hours.

1200uf, 200v had Nichicon LK, replace withVishay 157 PUM-SI
2200uf, 35v had Chemi-con SME, replace with Chemi-con SMG
1000uf, 35v had Elna RE, replace with Nichicon UKL
220uf, 35v had Elna RE2, replace with Nichicon UKL
4700uf, 10v had Elna RE2, replace with Nichicon UKL
100uf, 16v had Shoei ?, replace with Nichicon UKL

Thanks, Jim

I would replace it with this all 105C, 20% 2000 or + hours
however i need to know more space inside the power supply, distance between leads on the caps, and size of the can just in case its a tight space some pics would help thanks

[Electronic Handyman]

Re: Check my choices

What I try to do is for example if you've a 1200uf 200v electroltyic capacitor replace it with a 1200uf 220 or or 250v capacitor.Note sometimes it's hard to do this due to the space available etc.I'am not suggesting that Digi-key sells fake capacitors but just that ppl should be aware that their are companies making capacitors and putting false labels on them.I also agree with the previous post that that Nichicon MUSE Audio Capacitors are usually pretty good and if you plan on keeping the power supply awhile get the longest lasting capacitors that you can find.Check mouser and other sites to compare prices etc.

[Jim P]

Re: Check my choices

I sent the order in Friday afternoon, before I read the replies.
Will see how it works with what I ordered.

Thanks

Jim