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cwucnspt

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  1. I got the ones at Ebay. They are OK. 3-4 weeks to arrive thru USPO. I am having a bit of problem with the MJ15025/15024 version of PSU (re-testing and substituting components after an accidental short between +22 and gnd). Does the components without heatsink get warmish after 15 min without load. On PSU, I noticed that PNP and NPN and lm4040 diodes can get warm/slightly hot (how high?). Second, the short happened when amp was connected. Do you think I damaged any component on amp. Thanks.
  2. I am having a bit of problem with the PSU (re-testing and substituting components after an accidental short between +22 and gnd). Does the components in it get warmish after 15 min without load. On PSU, I noticed that PNP and NPN and lm4040 diodes can get warm or slightly hot (how high?). Second, the short happened when amp was connected. Do you think I damaged any component on amp. Thanks.
  3. For the KSA5 "new" power supply, pnp mpsw56 (1A) and npn mpsw061 are both obsolete.   Can I substitute it for mpsa56/mpsa06 (0.5 A)? Or can I use BD180G, which has 5V emitter - base voltage VEBO (instead of 4V in original) and gain bandwidth product ft at 3MHz (instead of 50MHz).  Or 2n4033, which has 5V and 1A (400 MHz).  Thanks in advance.

  4. Does anybody has the PCBs? Or should I get those at Ebay?
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