Help find capacitor

Tool suggestions, soldering tips, general useful electronics knowhow.
Steve
Posts: 2570
Joined: Fri Sep 15, 2017 11:49 am

Help find capacitor

Post by Steve »

Hi guys,

I've had this capacitor blow in an ultrasonic cleaner, I'm trying to find a replacement. I'm not too familiar with this type could someone point me in the right direction, thanks.

It says: EPQC E68 1.0K 250VDC

PXL_20210408_180817881.jpg
PXL_20210408_180817881.jpg (200.31 KiB) Viewed 2878 times
PXL_20210408_181126362.jpg
PXL_20210408_181126362.jpg (417.43 KiB) Viewed 2878 times
Steve
Posts: 2570
Joined: Fri Sep 15, 2017 11:49 am

Re: Help find capacitor

Post by Steve »

Also the bridge rectifier is a GBU8J 0740A, I'll replace this too as it's probably the reason behind the capacitor overheating
User avatar
rubber_jonnie
Site Admin
Site Admin
Posts: 10462
Joined: Thu Aug 17, 2017 7:40 pm
Location: Essex
Contact:

Re: Help find capacitor

Post by rubber_jonnie »

I think it may be EPOC and not EPQC based on a search.

Have a look here,it may help: http://www.anglia.com/product_guide/caps/112_115.pdf
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Steve
Posts: 2570
Joined: Fri Sep 15, 2017 11:49 am

Re: Help find capacitor

Post by Steve »

Ah cheers @rubber_jonnie would you say the capacitance is 1000nf?
Tomswork
Posts: 775
Joined: Fri Nov 22, 2019 10:05 pm

Re: Help find capacitor

Post by Tomswork »

EPOC E68 0.1uF 250Vdc Metallised Polyester Film Capacitor or some other value it is being a rifa capacitor is my guess


Tom
User avatar
rubber_jonnie
Site Admin
Site Admin
Posts: 10462
Joined: Thu Aug 17, 2017 7:40 pm
Location: Essex
Contact:

Re: Help find capacitor

Post by rubber_jonnie »

Steve wrote: Thu Apr 08, 2021 9:14 pm Ah cheers @rubber_jonnie would you say the capacitance is 1000nf?
I'm not 100% sure, that would make it 1uF, which is a value supported on that data sheet, but then so is 0.1uF.

Is there any more wording, or anything else on the other cap?
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
User avatar
rubber_jonnie
Site Admin
Site Admin
Posts: 10462
Joined: Thu Aug 17, 2017 7:40 pm
Location: Essex
Contact:

Re: Help find capacitor

Post by rubber_jonnie »

Ok, so I had a look here: https://www.wikihow.com/Read-a-Capacitor

And I believe I have an answer - 1.0 uF with a tolerance of +- 10% indicated by the letter K.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Steve
Posts: 2570
Joined: Fri Sep 15, 2017 11:49 am

Re: Help find capacitor

Post by Steve »

@rubber_jonnie thank you man, I appreciate it.

That exact manufacturer/model epoc seems hard to find, I might get this Panasonic equivalent instead:
https://www.mouser.co.uk/datasheet/2/31 ... 947591.pdf
User avatar
rubber_jonnie
Site Admin
Site Admin
Posts: 10462
Joined: Thu Aug 17, 2017 7:40 pm
Location: Essex
Contact:

Re: Help find capacitor

Post by rubber_jonnie »

Steve wrote: Fri Apr 09, 2021 10:45 am @rubber_jonnie thank you man, I appreciate it.

That exact manufacturer/model epoc seems hard to find, I might get this Panasonic equivalent instead:
https://www.mouser.co.uk/datasheet/2/31 ... 947591.pdf
No worries happy to help. I do have particularly good Google-Fu.

Let us know how you get on.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
User avatar
exxos
Site Admin
Site Admin
Posts: 23488
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: Help find capacitor

Post by exxos »

Just as a side note, High voltage capacitors near rectifier are usually suppression capacitors XY rated type stuff. They are designed to take a lot more hammering than regular caps are.

This one seems to be a good page about them..

https://www.allaboutcircuits.com/techni ... apacitors/
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Post Reply

Return to “ELECTRONICS”