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MX4000 - Switching off

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dabbler
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dabbler posted on Fri, Jul 19 2019 12:24 PM

Hi - i picked up a MX4000 and it has the following issue:

Switch it on, after a couple of minutes it goes into standby, the standby led is on. You switch it back on and after a minute it will go back into standby, this repeats and the time to go into standby from on decreases.

I took it apart thinking maybe a powersupply issue, someone in the past has already reflowed nearly all the PSU board components (hmmmm) any way, i reflowed again - no difference and the problem persists.

Do any experts out there have any idea where to start to troubleshoot please? Or any other ideas of what the cause of this maybe?

Many thanks for your help.

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dabbler
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Bronze Member

Ive now replaced: c32, c130, c61, c137, c31, c29, c132, c82, c100. c44. c120. c121, c131, c134, c46, c48, c53, c52, d82 and tr33

The problem still exists, does any one have any thoughts please? Its driving me mad!

Thankyou

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