Hi,
This morning I was unable to connect to the internet through my Motorola Surfboard SB5101U Modem. The function lights did not display their usual pattern. Rebooted the modem, no improvement. Phoned Comcast and a tech sent a signal to the modem to test it, told me it was unresponsive and needed to be replaced.
I've fixed a few monitors with bad caps before so I thought I would take a look inside. Most of the components were tiny, machine assembled I guess, way too small to replace. But there at the side of the board was a 470 microF 10V capacitor. No apparent bulging. I had a 470micoF 25V in my parts box and swapped it in.
After assembly and a call to Comcast to reset the connection my internet service is back to normal. As I recall I had been having minor connection problems and some latency with the modem before the total connection failure.
Al Moodie.
This morning I was unable to connect to the internet through my Motorola Surfboard SB5101U Modem. The function lights did not display their usual pattern. Rebooted the modem, no improvement. Phoned Comcast and a tech sent a signal to the modem to test it, told me it was unresponsive and needed to be replaced.
I've fixed a few monitors with bad caps before so I thought I would take a look inside. Most of the components were tiny, machine assembled I guess, way too small to replace. But there at the side of the board was a 470 microF 10V capacitor. No apparent bulging. I had a 470micoF 25V in my parts box and swapped it in.
After assembly and a call to Comcast to reset the connection my internet service is back to normal. As I recall I had been having minor connection problems and some latency with the modem before the total connection failure.
Al Moodie.
There are no service manuals or schematics for these that I know of. However… I did find the problem!
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