STANDARD C520 C528 how to repair if squelch is not working

Scritto Da: ELKOBA
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STANDARD C520 C528 how to repair if squelch is not working

Difficoltà

Moderate

Passi

7

Tempo Necessario

Nessuna stima

Introduzione

Because of free running fluid out of broken caps some vias can get broken. Here I will show you how to solve problems with not-working sqelch on STANDARD C-520 and C-528.

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    • Cover the plastic-front against scratches and daamages.

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    • Loose the screws on the back and on the bottom

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    • Remove the screws, marked red. Locate the old capacitors, marked yellow. And locate the old battery, marked green.

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    • Replace the old caps. At best exchange to tantalium. The three caps on the left uper side and the above the CPU must be replaced against 220µF 6V. Replace the battery It is a wired CR2016.

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    • Next lets have a look on the RF-unit. Loose the screws and desolder the antenna connector. Unmount the board. Then locate and replace the caps.

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    • Remember to replace the cap bottom left as well. The marked trimmer is for freqeuncy-alignment

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    • If squelch on your STANDARD C-520 or C-528 is not working then check and repair the vias as shown in the picture.

Conclusione

For more details how to dis- and reassemble pleace check the quide of recapping STANDARD C-520 and C-528 here on ifixit.com.

Autore

ELKOBA

Membro da: 25/06/23

312 Reputazione

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