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Marantz 2226B - Lights Up, No Sound

D

dndlounge

New Member
Hello all...I'm new to site and also new to vintage equipment collecting and restoration.
I recently acquired a Marantz 2226B. Plugged in and turned power on. All lights came on but no sound with any of the inputs. FM tuning and signal strength meters both fluctuate when tuning dial is rotated.
So....I connected the pre-amp out terminals on the back of the Marantz to the aux in terminals on an old Realistic STA-14A receiver and set the Marantz selector to FM. Realistic selector to Aux and I did get good sound with this configuration. Tuner is strong with just rabbit ear antennas.
Then I tried the opposite...Realistic tape out to Marantz main in. Realistic set to FM. Good signal but no sound from Marantz.
Last, I jumpered the Marantz pre amp out to the Marantz main in. No sound.
Any guidance or next steps are much appreciated!
 
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Welcome to AK. It looks like your pre-amp section is okay but not the main amp section. If you are comfortable, open the top cover and check all fuses on the Main-amp board (particularly F701 and F702).
 
Welcome to the Marantz forums. (See the schematic of the Main Amp & PS.) There are 4 fuses for the P700 main amp that you should check for continuity:
  1. F701 - Headphone output
  2. F702 - Speaker output
  3. F703 - Power
  4. F704 - Power
You didn't say you tested the headphone output, so you should check that first (it has a separate fuse).

You also didn't say if you checked with speakers connected to System 1 and System 2. This might help isolate a problem with the speaker switches (You did remember to push in one of the speaker switches, right :)?

Next, if you feel comfortable taking the cover off, you can check each of the four fuses for continuity with an ohm meter.

After that you can check for voltages to the P700 board.

Hope that helps!

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Thanks Sanjib...looks like the fuse blocks are missing. See attached. I guess I'll get those as well as the correct fuses.
 

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dankik said:
Welcome to the Marantz forums. (See the schematic of the Main Amp & PS.) There are 4 fuses for the P700 main amp that you should check for continuity:
  1. F701 - Headphone output
  2. F702 - Speaker output
  3. F703 - Power
  4. F704 - Power
You didn't say you tested the headphone output, so you should check that first (it has a separate fuse).

You also didn't say if you checked with speakers connected to System 1 and System 2. This might help isolate a problem with the speaker switches (You did remember to push in one of the speaker switches, right :)?

Next, if you feel comfortable taking the cover off, you can check each of the four fuses for continuity with an ohm meter.

After that you can check for voltages to the P700 board.

Hope that helps!

View attachment 2501768
Click to expand...

Thanks Dankik...I did try headphones but not speaker system 2. Also found fuse blocks are missing for F701 and F702. So that explains a lot! The Marantz and I are definitely a work in progress!
 
dndlounge said:
Thanks Sanjib...looks like the fuse blocks are missing. See attached. I guess I'll get those as well as the correct fuses.
Click to expand...
Huh! You don't need to check the other two fuses as one going to dial lamp and one going to the tuner power supply and you said both are working. Do you have DBT? If you install the fuse I would suggest powering it on DBT.
 
sanjib said:
Huh! You don't need to check the other two fuses as one going to dial lamp and one going to the tuner power supply and you said both are working. Do you have DBT? If you install the fuse I would suggest powering it on DBT.
Click to expand...

What is DBT?
 
DBT = Dim Bulb Tester, where an incandescent light bulb is wired in series with the AC power to the amplifier and the DBT is plugged into the wall used as a safety device so you don't fry your amp if there is a short in the circuit. This is used to limit the AC current supplied to the amplifier in case there is a short circuit. The bulb will normally flash bright then dim down as the amp powers up. If there is a short or drawing too much current, the bulb will continue to glow bright and limit the current to the amp. You can look it up on the internet, there might be a post regarding how to build or just look it up.
Here's a link.
Dim Bulb Tester Build and How-To | Audiokarma Home Audio Stereo Discussion Forums
 
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