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| Include Page |
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| TTSH Calibration guide |
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| TTSH Calibration guide |
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Troubleshooting knowledge
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i runned in some difficult erros in some TTSHs, here´s my experiences | Knowledge number | symptom | Probable error source | Probability of occurrence | pre check | testing | workaround | fix | lessons learned |
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| TTSH-1 | VCO bleed (usage of frequency slider from one OSC influenced other VCOs frequency or Frequency range isn´t good enough or screaming VCO - weird frequency / instable Frequency | LFO/VCO switch (LF switch) | 80% | insert a stable v/oct signal (doublecheck with other devices your v/oct signal) | press/push/wiggle the LF switch, if you hear or measure a better result -> | heat up the 6 switch pins | normally a resolder/heatup fix the issue | the switch pins must be soldered with other soldercore or better heated/other solder tip. | | TTSH-2 | all Slider LEDs are off | Trimmer, LED Driver | | turn on the frontpanel (left hand) the LED trimmer clockwise, check on the frontpanel side on the empty IC socket next that you bridged pin 6+7 and no IC is plugged inside the socket. if not fixed: measure on the 5 pole powerheader all voltages | n/a | | | dont forget the jumper/bridge on pin 6-7 | | TTSH-3 | few Slider LEDs are off | Trimmer, LED Driver | 50% | turn on the frontpanel (left hand) the LED trimmer clockwise, the TTSH LEDs are connected in 6? chains and in each chain are all slider LEDs in series - so you must check the correct LED polarisation (you can see the cathode/anode without demounting) | | | swap the LED to correct orientation | dont trust machines/roboter | | TTSH-4 | all VCOs dont work | VCO 4027 boards | 10% | are the VCO subboards correct mounted ? (check the board connectors) are the CA3046 ICs inside ? check the soldering of the board connectors | | | | solder all VCO conenctor pins before mounting the silders, add the CA3046 while mounting the connectors to the subboards |
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Gallery
check also the rev.3 buildguide pictures with HQ pictures ( thank you Björn Verbruggen)
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