QL PSU worth recapping?
Posted: Sat Feb 15, 2025 12:11 pm
Hello everyone,
I'm in the process of testing and fixing my old QLs that were boxed for several decades. One of them is working (two more to go...), but I was wondering about the quality of the caps inside the PSU. I opened one up and it looks quite crusty inside. Especially the two 3300uF caps sandwiched between the board and the heatsink. They are not bulging yet, but the ESR or capacity may be out of spec after all these years.
I read on this forum that the caps inside the QL itself are less likely to fail, compared to a ZX Spectrum.
But what about the ones in the PSU? Worth recapping?
I'm in the process of testing and fixing my old QLs that were boxed for several decades. One of them is working (two more to go...), but I was wondering about the quality of the caps inside the PSU. I opened one up and it looks quite crusty inside. Especially the two 3300uF caps sandwiched between the board and the heatsink. They are not bulging yet, but the ESR or capacity may be out of spec after all these years.
I read on this forum that the caps inside the QL itself are less likely to fail, compared to a ZX Spectrum.
But what about the ones in the PSU? Worth recapping?
