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Wurlitzer 2150 amp 14.01.15 12:50 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Hello
Our 2150 was working fine until yesterday
There is no sound anymore the rest is working fine
All the fuses are ok
All the new tubes light up
The 5u4gb is working but i have no high voltage on the caps(4 and 5 see picture) and other tubes
Who can help me with this problem?
Regards
Our 2150 was working fine until yesterday
There is no sound anymore the rest is working fine
All the fuses are ok
All the new tubes light up
The 5u4gb is working but i have no high voltage on the caps(4 and 5 see picture) and other tubes
Who can help me with this problem?
Regards
Re: Wurlitzer 2150 amp 14.01.15 13:09 |
Registriert - Registered: 15 Jahre - Years Einträge - Posts: 1.092 |
Hello!
Maybe the Resistor (13) is damaged. It is a double Resistor R69A-R69B.
If you have no Connction between Pin 1 and 3 on the Speakerplug, you cannot have Voltage
from the 5U4.
Regards Willi!
Maybe the Resistor (13) is damaged. It is a double Resistor R69A-R69B.
If you have no Connction between Pin 1 and 3 on the Speakerplug, you cannot have Voltage
from the 5U4.
Regards Willi!
Re: Wurlitzer 2150 amp 14.01.15 13:53 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Hi Willi
Thank you for your reaction
You are richt there is no connection between pin 1 and 3 on the speakerplug
I looked at resistor 13 and it seems to be bad see picture
Can i build it myself?
If so , do you have a schematic?
Regards
Tim
Thank you for your reaction
You are richt there is no connection between pin 1 and 3 on the speakerplug
I looked at resistor 13 and it seems to be bad see picture
Can i build it myself?
If so , do you have a schematic?
Regards
Tim
Re: Wurlitzer 2150 amp 14.01.15 14:06 |
Registriert - Registered: 15 Jahre - Years Einträge - Posts: 1.092 |
Hi Tim!
I am shure the Resistor is damaged, the 9kOhm part is mostly damaged.
You can change it with two 18kOhms 11Watt Resistors in parallel.
I have the Schematic for this Amplyfier.
The Connection between 1 and 3 is in the Plug for the Speakers not in the Amplyfier.
Regards Willi!
I am shure the Resistor is damaged, the 9kOhm part is mostly damaged.
You can change it with two 18kOhms 11Watt Resistors in parallel.
I have the Schematic for this Amplyfier.
The Connection between 1 and 3 is in the Plug for the Speakers not in the Amplyfier.
Regards Willi!
Re: Wurlitzer 2150 amp 14.01.15 14:25 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Hi willi!
Not in the ampyfier?
But where is it?
Can you give me a schematic to rebuild the Resistand please?
Gegards Tim
Not in the ampyfier?
But where is it?
Can you give me a schematic to rebuild the Resistand please?
Gegards Tim
Re: Wurlitzer 2150 amp 14.01.15 15:01 |
Registriert - Registered: 15 Jahre - Years Einträge - Posts: 1.092 |
Re: Wurlitzer 2150 amp 14.01.15 15:06 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Re: Wurlitzer 2150 amp 14.01.15 21:45 |
Registriert - Registered: 17 Jahre - Years Einträge - Posts: 4.096 |
Hello Tim
The jumper is in the speaker - connector (between pins 1 and 3, as Willi wrote) because it is not allowed to operate the amplifier without a load (speakers connected). If the plug is not plugged in, it is prevented that high voltage is generated and the amplifier may be damaged.
You can get here in the shop a schematic of of the amplifier ( [www.jukebox-world.de] ), or even a complete service manual ( [www.jukebox-world.de] ) for the jukebox.
In the shop, a replacement for the defective resistor is also available. [www.jukebox-world.de]
Best regards - charly49
The jumper is in the speaker - connector (between pins 1 and 3, as Willi wrote) because it is not allowed to operate the amplifier without a load (speakers connected). If the plug is not plugged in, it is prevented that high voltage is generated and the amplifier may be damaged.
You can get here in the shop a schematic of of the amplifier ( [www.jukebox-world.de] ), or even a complete service manual ( [www.jukebox-world.de] ) for the jukebox.
In the shop, a replacement for the defective resistor is also available. [www.jukebox-world.de]
Best regards - charly49
Re: Wurlitzer 2150 amp 15.01.15 05:00 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Hi
Next week i replace the resistant
I will let you know
Best regards
Tim
Next week i replace the resistant
I will let you know
Best regards
Tim
Re: Wurlitzer 2150 amp 16.01.15 04:55 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Hi
I'll order the resistor
But why did it burn ??
Best regards
Tim
I'll order the resistor
But why did it burn ??
Best regards
Tim
Re: Wurlitzer 2150 amp 16.01.15 08:16 |
Registriert - Registered: 17 Jahre - Years Einträge - Posts: 4.096 |
Hello Tim
I do not know why the resistor is burned. It seems to be a weak point of these amplifiers. It had been many of them to be replaced over time.
At your resistor the 9KOhm section is obviously damaged. If only this is broken, the amplifier should still work. It's just the screen grid voltage of the power tubes and some other voltages too high, which can lead to increased wear.
Best regards - charly49
I do not know why the resistor is burned. It seems to be a weak point of these amplifiers. It had been many of them to be replaced over time.
At your resistor the 9KOhm section is obviously damaged. If only this is broken, the amplifier should still work. It's just the screen grid voltage of the power tubes and some other voltages too high, which can lead to increased wear.
Best regards - charly49
Re: Wurlitzer 2150 amp 16.01.15 08:41 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Hello
On the 1650 part i get 3Mohm +
when i measure between pin 8 (5u4) and pin 4(6l6)
without all the tubes
regards
Tim
On the 1650 part i get 3Mohm +
when i measure between pin 8 (5u4) and pin 4(6l6)
without all the tubes
regards
Tim
Re: Wurlitzer 2150 amp 16.01.15 12:14 |
Registriert - Registered: 15 Jahre - Years Einträge - Posts: 1.092 |
Hi Tim!
The R69A ( 1650 Ohms ) is also damaged.
Than is the Best you take the replaysment Part from the Shop.
[www.jukebox-world.de]
Regards Willi!
The R69A ( 1650 Ohms ) is also damaged.
Than is the Best you take the replaysment Part from the Shop.
[www.jukebox-world.de]
Regards Willi!
Re: Wurlitzer 2150 amp 16.01.15 15:15 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Re: Wurlitzer 2150 amp 17.01.15 15:09 |
Registriert - Registered: 13 Jahre - Years Einträge - Posts: 121 |
Replaced r69 a+ b and the caps
The amp is working again
Thanks everybody for all your help
Regards
Tim
The amp is working again
Thanks everybody for all your help
Regards
Tim
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