Compaq 510 Sound Problem

[russell1981]

never seen this type of prb...my compaq 510 have (speaker) very low sound output!!!!when i use headphone there is no sound!!! sound soft installed properly....i have checked the motherboard speaker,it's ok...then i joint(not permanently) extra 1 speaker to motherboard,but the output was same,very low sound.....guys plz help me find out the problem plz....

[ben7]

Re: Compaq 510 Sound Problem

never seen this type of prb...my compaq 510 have (speaker) very low sound output!!!!when i use headphone there is no sound!!! sound soft installed properly....i have checked the motherboard speaker,it's ok...then i joint(not permanently) extra 1 speaker to motherboard,but the output was same,very low sound.....guys plz help me find out the problem plz....

A few things to check:
Is there a DC voltage on the audio output?
Is the supply voltage to the amplifier good?
Have you tried cleaning the Jack? Sometimes the contacts get dirty.

[russell1981]

Re: Compaq 510 Sound Problem

dear ben7,jack is ok(no output voltage in jack)0,no supply voltage in amplifire i mean idt 92hd75b2x5 ic..no voltage...reading,another prb is 1 transistor just burn..besides of the ram near the capacitor....what can i do now plz help me....

[ben7]

Re: Compaq 510 Sound Problem

Can you get a good close up of the transistor that is burnt?

We also need the schematic for the motherboard. Anybody else?

[spidey]

Re: Compaq 510 Sound Problem

give the mobo code.

[russell1981]

Re: Compaq 510 Sound Problem

sry to ask but what is mobo code?

[russell1981]

Re: Compaq 510 Sound Problem

pzl guys give me an solution :-(,plz help.

[innocentforeign]

Re: Compaq 510 Sound Problem

hi
dear first of all replace transistor Q505 and check another component near by the transistor & also you need schematic of same pcb

[spidey]

Re: Compaq 510 Sound Problem

sry to ask but what is mobo code?

Mother board Code to find the schematic.

[russell1981]

Re: Compaq 510 Sound Problem

here is the mobo code,think so:hannstar j mv-4 94v-0 /0937

[russell1981]

Re: Compaq 510 Sound Problem

where can i replace q505?i have toshiba l300 laptop dead...can i replace q505 from toshiba l300 laptop?

[russell1981]

Re: Compaq 510 Sound Problem

plz guys help me :-(

[fddizon]

Re: Compaq 510 Sound Problem

hi,

here are three schematics that i don not exactly know which one is yours.
you can verify this by identifying few parts that will match on to the schematic vs your motherboard. once you've identified, verify the part number of the burnt semiconductor.

if q505 belongs to fan conn, check fan after replacing the faulty part. hope this helps.

[fddizon]

Re: Compaq 510 Sound Problem

where can i replace q505?i have toshiba l300 laptop dead...can i replace q505 from toshiba l300 laptop?

yes if you can if the part you are going to take from toshiba is exactly the same part as from your hp laptop

[russell1981]

Re: Compaq 510 Sound Problem

dear,fddizon thanks for your feedback.....thanks a lot...i am going to try.