Badcaps.net Forum
Go Back   Badcaps Forums > General Topics > General Capacitor Questions & Issues
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 05-17-2017, 07:47 AM   #1
Morsus
Member
 
Join Date: Nov 2016
City & State: Zrenjanin
My Country: Serbia
I'm a: Knowledge Seeker
Posts: 73
Default Cannon IP4300

Hello again folks.
I am messing around with this Cannon printer and cant get it to "go out of sleep mode". Turns out that power supply is actually working well but the problem is inside the printer itself. I noticed that there are a bunch of sensors witch may be the culprit but I have no idea how to test them. I have checked the caps on the logic board and they all seem fine.
Can you help me identify the culprit?
Thanks.
Attached Images
File Type: jpg IMG_20170506_195930.jpg (418.3 KB, 9 views)
File Type: jpg IMG_20170506_195946.jpg (434.8 KB, 9 views)
File Type: jpg IMG_20170506_200806.jpg (533.3 KB, 11 views)
File Type: jpg IMG_20170510_190910.jpg (1.12 MB, 14 views)
File Type: jpg IMG_20170510_190855.jpg (1.24 MB, 9 views)
Morsus is offline   Reply With Quote
Old 05-18-2017, 08:40 PM   #2
sam_sam_sam
Badcaps Veteran
 
Join Date: Jul 2011
City & State: Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 1,213
Default Re: Cannon IP4300

Here is what I would do

All of electrolyte caps in photo 2 and 3

To test these caps the right way you need a ESR meter this will tell you just how good those caps are now I will also use a cap meter as well to see what UF value is the two reading will tell you a lot-------> but even with this information a lot time I will just replace them any way

How did you test the power supply----> did put a load on it like a light bulb that would pull a load that the power supply can handle

Here is why I say this------> I had a switching power supply that with no load on it ---> it would show the voltage like it should but as soon as you try to put a load on it the voltage would go to very close to zero volts

I would replace all of them and recap the power supply as well

I had a printer problem just like that and I thought is was a software problem but it was not it was a bad caps problem

I am still using this printer to this day
__________________
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Desk Top Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *


These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

1 Over Head Crane Current Sensing Board
2 Hem Saw Computer Stack Board

All of these had CAPs POOF
All of the mosfet that are taken out by bad caps

Last edited by sam_sam_sam; 05-18-2017 at 09:00 PM..
sam_sam_sam is offline   Reply With Quote
Old 05-18-2017, 09:53 PM   #3
Morsus
Member
 
Join Date: Nov 2016
City & State: Zrenjanin
My Country: Serbia
I'm a: Knowledge Seeker
Posts: 73
Default Re: Cannon IP4300

I have already tested the logic board caps (pictures 2-5) and all were very close to their initial value so must be good but still didn't check the mosfets. I see only one mosfet on that board and it's a 8pin on the very right side of the board (picture 4). Will check that tomorrow. Voltages of the power supply are about 10V witch is 1/3 of the actual voltage that should be outputted. Witch means the board is still in "sleep" mode and is not receiving the signal to "wake up".
Morsus is offline   Reply With Quote
Old 05-19-2017, 01:10 PM   #4
sam_sam_sam
Badcaps Veteran
 
Join Date: Jul 2011
City & State: Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 1,213
Default Re: Cannon IP4300

Please post some photos of the power supply

Thanks
sam_sam_sam is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2019
Powered by vBulletin ®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 09:01 PM.
Did you find this forum helpful?