Eokboy
100+ Head-Fier
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Oh that is what R3P is for. I probably should use 5W 22-33R instead.
Originally Posted by tuna320 /img/forum/go_quote.gif Having a little problem getting any kind of readout on PB+ test point. I have hooked up everything except the jumpers and am getting a reading of 18.6 volts on the screws holding the yellow and black wires coming into the board. My led on the tubes light up fine so i know some power is getting to the board. However when i measure the PB+ the DMM goes crazy with no steady reading. None of the other test points measure anything. i have not installed pins into the test points, would this help. Also i have installed 100v 100uf caps in C8P, C9P, C11P and C12P and its a little crowded on the board. I see the original parts list show 22uf for C11 and C12, does this matter. Any help would be appreciated, thanks |
Originally Posted by FairyTales /img/forum/go_quote.gif Hey there, I have a small problem with my soha II which only appeared recently. I start the amp and after a few minutes of music listening, i hear the click of the relay and the music stops for a few seconds. The same behaviour happens 2 or 3 times during the first 30 minutes of use but not afterward I have quickly checked with the meter and nothing seems to be out of range (the amp is working flawlessly except for those random "pause"). What should i check? |
Originally Posted by tuna320 /img/forum/go_quote.gif Having a little problem getting any kind of readout on PB+ test point. I have hooked up everything except the jumpers and am getting a reading of 18.6 volts on the screws holding the yellow and black wires coming into the board. My led on the tubes light up fine so i know some power is getting to the board. However when i measure the PB+ the DMM goes crazy with no steady reading. None of the other test points measure anything. i have not installed pins into the test points, would this help. Also i have installed 100v 100uf caps in C8P, C9P, C11P and C12P and its a little crowded on the board. I see the original parts list show 22uf for C11 and C12, does this matter. Any help would be appreciated, thanks |
Originally Posted by regal /img/forum/go_quote.gif Normal behavior IMO, all tube amps need to warm up 30 minutes for the tubes to settle. |
Originally Posted by FairyTales /img/forum/go_quote.gif The only problem is that behaviour only appeared recently, and it also happens after the 30 minutes, it's completely random, yesterday for example it did happen more than 2 hours after powering on the amp. Could the relay be toasted? |