# ESQ-1 Dead keys - 8 in a row **URL:** \ **Category:** Synth Repair\ **Created:** [November 29, 2019, 4:26am UTC](https://forums.syntaur.com/t/esq-1-dead-keys-8-in-a-row/1280 "2019-11-29T04:26:36Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![80sboy](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/8/49beb7/32.png) [@80sboy](https://forums.syntaur.com/u/80sboy)\ **Post date:** [November 29, 2019, 4:26am UTC](https://forums.syntaur.com/t/esq-1-dead-keys-8-in-a-row/1280/1 "2019-11-29T04:26:37Z")
Hello everyone! Metal bodies ESQ-1 - has 8 dead keys, starting at middle C, all in a row Swapped the cable, no change - swapped in another keyed that has other problems, and those 8 notes work, so I assume its not the keyboard IC - Diodes LOOK fine but I assume that may be the problem? Would it be each individual diode? Anyways pulled the keyboard circuit board out looks fine on the underside besides some normal age related corrosion - Good place to start for troubleshooting dead keys 1 octave 8 notes? thanks! tom ---
**Author:** ![PPD](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/p/59ef9b/32.png) [@PPD](https://forums.syntaur.com/u/PPD)\ **Post date:** [November 29, 2019, 1:47pm UTC](https://forums.syntaur.com/t/esq-1-dead-keys-8-in-a-row/1280/2 "2019-11-29T13:47:53Z")
The keybed is connected in groups of 8 keys. You’ll find that those 8 diodes have a common connection to the keybed connector. Have a close look at the solder connections and check for hairline cracks in the PCB traces. Regards Pat ---
**Author:** ![80sboy](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/8/49beb7/32.png) [@80sboy](https://forums.syntaur.com/u/80sboy)\ **Post date:** [November 29, 2019, 7:04pm UTC](https://forums.syntaur.com/t/esq-1-dead-keys-8-in-a-row/1280/3 "2019-11-29T19:04:40Z")
I checked continuity from what I could - will reflow some suspect looking connections and try again!