Started by Witchy, 10:39, 27 May 21
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Quote from: Witchy on 19:44, 10 July 21Hello folks, a further update in amongst various hospital visits, who said getting old was fun? Pins 10/11 on the STK were dead short so the total casualty so far is R501 (open), IC501 (short on 2 pins), D507 (short), C506/C507 (below tolerance), D502/D503 (short). Having replaced all of those I got a nice wisp of smoke next to the flyback and with a high speed camera I could see what's marked on the schematic as R521 having a bit of a spark. This fusible 1 ohm resistor is the path to pin 6 of the flyback and sync circuits via L503. Testing it out of circuit shows it's dead (now) so while I can replace that too do I also need to think about replacing the flyback? Donberg claim to have them or at least have knowledge of them.Can't add attachments or insert images for some reason so here they are.https://binarydinosaurs.co.uk/burnyResistor.jpghttps://binarydinosaurs.co.uk/burnyResistor2.jpgCheers!
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