Aggiusta la tua roba Comunità Store

A color version of the Nintendo Game Boy, released in 1998. Repair of this device is straightforward.

74 Domande Visualizza tutte

Opzioni

Why is my C38 Capacitor not working? (Pocket-Color Conversion)

I’ve built a few Pocket-Colors with success. However, I haven’t had audio in the last two I’ve built. It seems to be down to the C38 capacitor. It only reads 0.008V when powered on.

A Pocket-Color conversion requires trimming the bottom portion of the motherboard and makes use of jumper wires to fix the issues of not having a Headphone jack or DC Input.

I’ve went back through the original systems I built, found no discrepancy. I checked the tutorials I originally watched and verified I’ve done everything correctly.

I swapped the C38 from a known working system into a faulty system to no avail. However, now the originally good system is experiencing the same issue. Replacing the capacitors has not proven fruitful.

If anyone could help me with this, I would greatly appreciate it.

Rispondi a questa domanda Anch'io ho questo problema

Questa è una buona domanda?

Sì No
Punteggio 0
3 Commenti

@itsrikka are you swapping the same capacitor over to the different boards? Have you used a new capacitor or at least checked the one you are swapping?

da

@oldturkey03

For the first test, I did use the same capacitor but since then I’ve gotten a pack of 50 to test with. So far, none have worked. I’m about 8 in.

da

@itsrikka okay good. Had me worried there for a minute ;-). Let's see if we can find out what might be going on with that circuitry.

da

Aggiungi un commento

1 Risposta

Filtra per:
Più utili Più recenti Più Vecchio
Risposta Più Utile

Opzioni

Hi @itsrikka

Don't know about the pocket colour conversion but looking at the schematic for the Game Boy Colour audio section, "IF" the C38 capacitor is used for the same purpose as in the image below what voltage is seen on the speaker terminals?

Block Image

(click on image to enlarge).

Also don't forget that audio is essentially an AC signal (really it is fluctuating DC so essentially it is like AC i.e. it has +ve and -ve "going" voltages), not straight DC per se, so make sure that there is an earth on one side of the capacitor as the audio current needs to flow through the capacitor to earth for the speaker to work. DC current will not flow through a capacitor but the AC audio component will.

Questa risposta è stata utile?

Sì No
Punteggio 2
Aggiungi un commento

Aggiungi la tua risposta

Rikka Lee sarà eternamente grato.
Visualizza Statistiche:

Ultime 24 Ore: 1

Ultimi 7 Giorni: 4

Ultimi 30 Giorni: 24

Tutti i Tempi: 319