Recapped GG needs time to warm up, how to fix?

[mngb123]

Hi,

Wondering if anyone else have come across this. I have a GG that has all its caps replaced (motherboard, powerboard, soundboard) and the LED mod done. The funny thing is that when you first switch it on (powered by the ext adapter), it doesn't turn on, the red power light is off andthe screen remains dark. However, if you leave it alone with the switch on for a few minutes and try turning it on again, it comes to life and everything works.

I measured the voltage across the LEDs and notice that when you first turn it on, it is low e.g. 1V or so. Which explains why the LED doesn't power up. As time goes by, the voltage actually rises and eventually, it is sufficiently high to drive the LEDs.

Question, could this be due to the 'new' capacitors that I put in the GG? The capacitors I used are a mix of electrolytic, ceramic and tantalum, depending on what I can find. Should I have kept to just a particular type or are the symptoms due to damaged caps?

Sorry for the long story... any advice appreciated. Tx.

[TmEE]

I think its more likely that the electrolyte leaked from the old caps is causing it, unless you washed it all off rather than just replacing the caps... ?

[mngb123]

After I remove the old caps, I usually mop up the area with an alcohol soaked Q-tip. There may be a bit of leftover flux after I solder on the new caps though.

[ApolloBoy]

Question, could this be due to the 'new' capacitors that I put in the GG? The capacitors I used are a mix of electrolytic, ceramic and tantalum, depending on what I can find. Should I have kept to just a particular type or are the symptoms due to damaged caps?

That might be the issue. I've recapped two Game Gears and they never had to "warm up". All the caps I used were electrolytic.