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Old 04-30-2022, 02:14 AM   #1
Carm99
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Default TDK VYK3637 SMPS Power Supply

Hi
Iíve got a couple of these that need some attention.
One powers up the machine but cuts out after a while.
The other one doesnít power up at all.
Iím sure itís only a couple of components causing it ,hopefully.
Iíve recapped both of them. One worked after ,the other one didnít. I want to keep the repairs cheap as Iím trying to sell the machines they go into.
Would anyone be able to give me a rough estimate on the cost.
Im in the london area.
Anyone have any recommendations for repairs in the the area.
Ive contacted a couple already just waiting for a reply.
Any experts on the machines they go into would be welcome too.
They are Panasonic M11 AU62 and AU65.
Thanks
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Old 05-01-2022, 09:28 AM   #2
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Default Re: TDK VYK3637 SMPS Power Supply

Please post a picture of both sides of the circuit board in question we might be able to help you figure out what could be going on with it
__________________
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching 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 ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board

All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
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Old 05-01-2022, 12:38 PM   #3
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Default Re: TDK VYK3637 SMPS Power Supply

Here are some images of one of the power supplies.






image uploader




Last edited by Carm99; 05-01-2022 at 01:01 PM.. Reason: Forgot some images.
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Old 05-01-2022, 04:55 PM   #4
stj
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Default Re: TDK VYK3637 SMPS Power Supply

there is a tiny cap with black marker on top you didnt change - it's most vulnerable from heat
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Old 05-02-2022, 01:56 AM   #5
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Default Re: TDK VYK3637 SMPS Power Supply

Thanks Iíll change that.
What I really need is a tech to look them over and test them.
See whatís going on with them.
Cheers.
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Old 05-02-2022, 06:40 AM   #6
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Default Re: TDK VYK3637 SMPS Power Supply

where are you located?
shepards bush?
totenham ct road?
i am assuming your in the tv industry
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Old 05-02-2022, 08:08 AM   #7
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Default Re: TDK VYK3637 SMPS Power Supply

Hi
Im in nw10. Iím trying to get them powering properly at least to sell them on.
Thanks.
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Old 05-02-2022, 10:22 AM   #8
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Default Re: TDK VYK3637 SMPS Power Supply

harlsden / hanger lane?
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Old 05-02-2022, 11:02 AM   #9
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Default Re: TDK VYK3637 SMPS Power Supply

Hi itís more Willesden.
I canít do much at the moment. I just wanted to find out if anyone could test them ,check them out. I doubt itís something major. Hoping it werenít too much to fix and that kind of thing.
Cheers.
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Old 05-02-2022, 12:06 PM   #10
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Default Re: TDK VYK3637 SMPS Power Supply

i'll pm you later - i'm *very* close!
i could look at the psu's
dont know about the decks though - are they DigiBeta or something?
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Old 05-02-2022, 12:41 PM   #11
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Default Re: TDK VYK3637 SMPS Power Supply

M11 they are.
Thanks.
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Old 05-09-2022, 02:32 PM   #12
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Default Re: TDK VYK3637 SMPS Power Supply

Hi again.
I sold one of the MII machines. Buyer wanted to repair it himself.
I’m left with the one that doesn’t power up at all.
Cheers
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Old 05-10-2022, 05:48 AM   #13
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Default Re: TDK VYK3637 SMPS Power Supply

I pulled 2 rectifiers (B92M) out so far to test them ,and got an extra reading on one of them. Any ideas.?
Thanks



Last edited by Carm99; 05-10-2022 at 06:10 AM.. Reason: Wrong description
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Old 05-10-2022, 09:47 AM   #14
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Default Re: TDK VYK3637 SMPS Power Supply

I removed another B92M and got the extra reading on that one too.

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