Problem with pcb

[smoogy]

Hi. I'm in the middle of a project due Monday. It's a musical keyboard made as a double sided pcb. I just finished soldering but the circuit won't pass a continuity test, i. e. the line that goes out of the voltage regulator doesn't carry 5 V. Can anyone help me fix the problem?

[reksbg]

Could be thousands of things.
For questions like that is better to post the schematic and/or the PCB  .

[smoogy]

I did post the pcb as a .jpg. Anyway, now i put inside a zip file the schematic and the board file as .pcb and .jpg. The .pcb were made in PCB Wizard.

[user112]

hello
1. verify the regulator -the terminals configuration first this it is in general the problem look better in datasheet and to pcb (also for IC when you print out the pcb normal or mirror)
2. remouve the IC and verify the presence of 5V again
3. is indicated to have un capacitor before and after the regulator 20-100uF
4. verify the continuity (with ohmeter) of the  line between Vcc and the input of the regulator

[reksbg]

I did post the pcb as a .jpg. Anyway, now i put inside a zip file the schematic and the board file as .pcb and .jpg. The .pcb were made in PCB Wizard.

Sorry - I can't see the attachments  .

[mylogin]

1) remove regulator,  measure +5v pcb trace and GND, make sure it is not short. (you should do this before soldering any component in the PCB.)

2) check the regulator pinout,  most of the problem is here.

3) disconnect regulator output pin to the PCB, measure if there are +5V output from regulator.

[pl4tonas]

Check what user112 said.  In case there is a voltage when you remove the IC, you should suspect either a faulty IC or you connect it the wrong way.  I mean check the pins of the IC that are used as +V and ground, you may connected them reverse.  Also check the filtering capacitor for short.

Is your regulator connected the correct way?
Are your copper trucks continuous or there are cracks?

[smoogy]

The circuit is dead. When I test continuity on tracks, it works fine. But, when I turn on the circuit, it measures 5 V on every track. I'm gonna let go the pcb and return it to protoboard.