Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: level42 on August 04, 2010, 04:33:24 PM

Title: Examining an Amplifone PCB....
Post by: level42 on August 04, 2010, 04:33:24 PM
(http://gallery.me.com/andre.huijts/100675/DSCF5658/web.jpg?ver=12809322760001)


.....mmmm, I think Q2 might be bad......  ;D ;D ;D


(For those not experienced with electronics, it should look like Q3.... the top is completely blown off )

Still, all the smoke damage is not from the transistor but from the resistor under it. Incidentally this is the second time I've seen this on a deflection PCB. First I got fixed easily by replacing all the small parts "in the area"...... :)

Thought it was just funny how sometimes parts damage :D
Title: Re: Examining an Amplifone PCB....
Post by: Etienne MacGyver on August 04, 2010, 04:42:39 PM
i dont see the pic ?
Title: Re: Examining an Amplifone PCB....
Post by: level42 on August 04, 2010, 04:51:22 PM
Should be OK now...
Title: Re: Examining an Amplifone PCB....
Post by: level42 on August 04, 2010, 05:25:43 PM
Was just looking at the board again and actually the smoke came from R7 (which is covered by the cap on the picture). It's completely broken in the center :)

Burn baby burn.

Bit strange that this is now the 2nd time to see the same thing. It's even stranger because this is the Y section (and this less loaded than the X section.....

O well.....let's just order parts and fix it :)

By the way, I have now 2 spare deflection PCB's I reckon that one is enough. So, I'm planning on fully re-working/building both spares and sell one. Any interest ? It will be 100% bullet-proof.
Title: Re: Examining an Amplifone PCB....
Post by: Superully on August 04, 2010, 06:24:07 PM
Quote from: Level42 on August 04, 2010, 05:25:43 PM
By the way, I have now 2 spare deflection PCB's I reckon that one is enough. So, I'm planning on fully re-working/building both spares and sell one. Any interest ? It will be 100% bullet-proof.

you don't happen to have a spare cabinet around it, do you? 8)
Title: Re: Examining an Amplifone PCB....
Post by: ckong on August 04, 2010, 07:41:29 PM
Quote from: Superully on August 04, 2010, 06:24:07 PM
Quote from: Level42 on August 04, 2010, 05:25:43 PM
By the way, I have now 2 spare deflection PCB's I reckon that one is enough. So, I'm planning on fully re-working/building both spares and sell one. Any interest ? It will be 100% bullet-proof.

you don't happen to have a spare cabinet around it, do you? 8)

LOL

What a mess that board is. Is it yours  ;)
Title: Re: Examining an Amplifone PCB....
Post by: level42 on August 05, 2010, 12:37:23 AM
 ;D

I'm afraid this is your spare....but hey, that baby will run like new :D