MARANTZ 2270. HELP

[jFF_Bulbo]

Hello
I recently tried to recap tonee board P450. Once i finished, the left channel sounds low and dirty. Unit was working fine before i Recap, so, i have done something wrong.

To replace capacitors i installed MPK caps With Tha same values. I resolder and Soublette checked my work.
Before:

After

And i really wish yo retore my Marantz

Thank you in advance.

 

[ivandezande]

Well first off, you really didn't need to replace anything on that board.
Second, check everything again. You obviously put something in wrong or made a solder bridge if it doesn't sound right after you worked on that board. Check all joints you soldered.

 

[sherod]

Make sure you replace the ceramic caps with equal value COG type ceramics. See next post with cap list for tone board.

 

[sherod]

Here is a cap list that Leestereo posted on his tone board mod:

 

[Steven Tate]

Probably nothing, but Leestereo’s C455/456 are blue C0G ceramic caps. Yours look like film caps. Are you sure of the values?

 

[jFF_Bulbo]

Here is a cap list that Leestereo posted on his tone board mod:

View attachment 1434311

i Used MKP for 22nf50v, 6.8nf/100v, 0.01uf monolitic, 0.0022 monolitic