Reply to "Preventing old protosound 2 (5 volt) board from blowing?"

Allan LoczyOGR Forum Member

@JohnActon posted:
Some of these 5v boards seem to fail even with a fresh fully charged battery. The weak component seems to be a 330uf @ 35v capacitor It can be removed and replaced without separating the boards. According to GRJ this is a common failure point. When you do make sure you follow good static discharge prevention protocols and use an ESD safe iron. Make sure to note the polarity of the cap in the board before you remove it. I bought a bag of these caps and have replaced it one of my four 5v boards and it's still working . In the early 2000s there was a virtual pox of bad chinese caps and I would imagine this one of them. j

If a cap pops or buldges out and kills the board, can you still replace the cap and bring the board back to life? Once the board dies, if I replace the cap, WILL the board be able come back to life?

2/23/225:31 PM

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

OGR Forum Supporting Membership Required

OGR Forum Supporting Membership

Help support this forum with an OGR Forum Supporting Membership.You will be able to watch the videos in the INSTRUCTIONAL VIDEO FORUM!A one-year OGR Forum Supporting Membership is only $12 per year, so sign up now!

OR

Access the ALL the OGR VIDEO FORUMS AND over 300 back issues of OGRwith a DIGITAL SUBSCRIPTION!

Please wait...

Help support this forum with an OGR Forum Supporting Membership.
You will be able to watch the videos in the INSTRUCTIONAL VIDEO FORUM!
A one-year OGR Forum Supporting Membership is only $12 per year, so sign up now!

Access the ALL the OGR VIDEO FORUMS AND over 300 back issues of OGR
with a DIGITAL SUBSCRIPTION!