HPE Community read-only access December 15, 2018
This is a maintenance upgrade. You will be able to read articles and posts, but not post or reply.
Hours:
Dec 15, 4:00 am to 10:00 am UTC
Dec 14, 10:00 pm CST to Dec 15, 4:00 am CST
Dec 14, 8:00 pm PST to Dec 15, 2:00 am PST
Servers - General
cancel
Showing results for 
Search instead for 
Did you mean: 

KVM - Power Supply problem

 
Yehia Farouk
Occasional Contributor

KVM - Power Supply problem

Dear,

I have a KVM of product number 336045-B21.
the product is out of warranty, and has a faulty internal power Supply DVE with part number DSO-142L, I can't find this part with HP or anywhere else.
any advice??
19 REPLIES
Pieter 't Hart
Honored Contributor

Re: KVM - Power Supply problem

a place to look could be
http://partsurfer.hpe.com/

A quick check showed no power supply, but maybe you could contact them.

David Comeau
Occasional Visitor

Re: KVM - Power Supply problem

Yehia,
I am experiencing the same issue with multiple devices. Did you ever find a solution?

Thanks in advance.
The Unkown Tek
Occasional Visitor

Re: KVM - Power Supply problem

I had problems with this same PS DSO-142L. It was making wavy lines (looked out of sync) on the monitor.

I changed out 2 Caps in the PS and its works like new. ($2 in parts)


Attached is some information that might help you fix it yourself.
Pieter 't Hart
Honored Contributor

Re: KVM - Power Supply problem

I did the same as Tek, replaced the cap's myself.

But beware there are high voltages present in this unit.

Especially keep away of the metal top of the big black capacitor that may carry more than 400V (when testing the kvm-switch with open PSU).
Neal Eckett
Occasional Visitor

Re: KVM - Power Supply problem

I have found a replacement PSU for these boxes. It requires a slight modification to the case, but works a treat :)
Njal_1
Occasional Visitor

Re: KVM - Power Supply problem

Hi Neal

Do you have a link to the replacement psu?
Nuo Pereira
Occasional Visitor

Re: KVM - Power Supply problem

I have the same proble´m , i changed capacitor but the same , led is off, you can help-me ?

PDP-Fan
Valued Contributor

Re: KVM - Power Supply problem

You will have to replace ALL capacitors on that power supply. Especially the small ones can cause trouble, even if they look OK.

Also check the fuse which is soldered on the P.S.... if that is broken, there is more defective as only the caps. Although it is possible that only the fuse alone failed. This happens sometimes.

***********************************************
"If it seems illogical... you just don't have enough information"
al3185
Collector

Re: KVM - Power Supply problem

Hey i know it has been years since you posted this but i remember seeing it and decided to come back and let you know and the community know that i found this place in California that can actually fix them and the turn around time is fast, then i sent them the rest of my defective units, i had 15 and in less than a week they were back at my door and for the price is all worth it, they gave me a better deal for the quantity and saved lots of money. 

Here is the link to their site:

[Broken link removed on 03-23-2017 by Admin]

 

 they are called OEM Systems and talked to this guy Lius he will help you with this and explain to you better the process and how would be a better way to save you money.

 

Good luck to you all!

Delltek
Occasional Visitor

Re: KVM - Power Supply problem

PSU Power Supply Repair, Exchange & Recycling Service

HP & DELL KVM
336045-B21 396631-001 340387-00
336044-B21 396630-001 340386-001
396631-001 340387-001
180AS 2160AS KVM RP163 PY252 W7941
DVE DSO-142L  Tamura  

Personal Info Erased

lcard
Occasional Visitor

Re: KVM - Power Supply problem

I need know this solution please

henrytrinh
Occasional Visitor

Re: KVM - Power Supply problem

I am experiencing the same issue with multiple devices. Did you ever find a solution?

 

PDP-Fan
Valued Contributor

Re: KVM - Power Supply problem

Hello there

As I wrote in my post earlier, you will have to repair or replace the power supply. Most likely the problem are the electrolytic capacitors. If you have experience in soldering you can do that yourself.

If you are in Switzerland or not too far away from it, you could send me the unit for a cost estimate and repair. But keep in mind that such devices can be bought relatively cheap at the hardware broker market.
Or you look for an electronics repair guy near to you....

***********************************************
"If it seems illogical... you just don't have enough information"
ken-mchome
Visitor

Re: KVM - Power Supply problem

Hi i have 3 KVM and the power supply is not working can anyone help me Please, i have a home network and i cannot pay $150. and more to get them repaired

I would appreciate and help.

Thank you Ken

Highlighted
PDP-Fan
Valued Contributor

Re: KVM - Power Supply problem

http://www.instructables.com/id/Repair-your-electronics-by-replacing-blown-capacit/?ALLSTEPS

This is a good repair instruction. It's not a KVM Switch but the problem may be th same and the way to repair is identical. I would change ALL the capacitors regardless of how they look. Sometimes even the perfect looking ones can be bad. Fortunetely the most expensive ones (rated 200V to 450V) at the primary side of the power supply are in most cases not faulty. Make sure that you also replace the very small ones especially those next to the control chip. The look innocent but sometimes they are the only problem.

Also check the fuse first. Sometimes it's only the fuse...

Many KVM Switches have standard industrial power supplies inside. Look at some electronics distributors for a power supply with the same voltages, currents and size. You may find one that fits exactly. The downside is that these P.S. will cost about $30 to $50 per piece.... saving money can become difficult.

***********************************************
"If it seems illogical... you just don't have enough information"
ken-mchome
Visitor

Re: KVM - Power Supply problem

Ok so i though i could go with a Mean Well Model: RS-15-5 , and it should have all the specs i need , well no they don't work on all 3 KVM , so i looked into getting the caps i need and what should i say , i have looked throw 20 Caps company pages and have only found 1 cap match  it is always the size that does not match , would you know where i can get them ? it looks like i need (3) 47uf 25VDC  17mm x26mm ,  ( 3) 2200uf 10VDC 10mm x 25mm , (9) 470uf 10VDC  6.3mm x 15mm ,

Thank You

ChrisNTL
Occasional Visitor

Re: KVM - Power Supply problem

I have in the past got caps from here...

https://www.digikey.ca/products/en#cat-3

I know they do list dimensions. I have also had luck on ebay for a cap I needed for my daughter's CD player.

ChrisNTL
Occasional Visitor

Re: KVM - Power Supply problem

I just found this listing all specs and parts.

I know it will help me as some caps are hard to read on board when I want to find replacements.

PDP-Fan
Valued Contributor

Re: KVM - Power Supply problem

It seems someone made a great effort to draw this manual.

One little correction about the capacitor lifetime. A lifetime of 10 000 hours seems not very much. But keep in mind that those 10 000 hours are calculated at a temperature of 105 degree C (or whatewer your cap is rated). If the operating temperature is less than that, the lifetime will be much longer.

In fact a 10 000 hour cap is not too bad at all. The problem is that cheap, noname, crappy caps are used for cheap and crappy power supplies. I suspect this is done deliberately to make them fail shortly after warranty runs out.
I had a Fortinet firewall with a failed P.S. last month. They used 3 good quality NipponChemicon caps and one noname. Guess which one failed...?
Why is an engineer doing that? Why does he choose 3 good ones and one bad one?

I recommend to use 105 deg C capacitors. (Panasonic or NipponChem) The 85C caps will not live very long in such a dense populated power supply. 105C is standard with all PC and server applications. (power sup./mainboard)

***********************************************
"If it seems illogical... you just don't have enough information"