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Pioneer sx 737

Is it a big job to replace lamps in this unit.  Right now the fm stereo lamp is out and the meters are slightly dimmer than the rest of the unit.  I would like to get them all replaced.  If I was to take it to a tech what migt I expect to pay for this service or could I do it myself.  Myself being a maint tech for a cable Co for 27 yrs. Thankyou

Posted by sx737 on


5 Related Answers


Sonny Berry

  • 8617 Answers

SOURCE: Lamp Hour Meter

This proceedure should work for your model to reset the lamp meter.
Lamp Time Reset Procedure:
Be sure to reset the Lamp time to "0" after replacing the new
1. Plug in the AC Cord, and turn on the power by pressing the
POWER button.
2. Press and hold the VOLUME DOWN button on the unit and
the SPLIT key on the remote together for over 5 seconds
in power on condition.
When the reset is finished, the display will indicate that the lamp hrs have been reset to 0 and the LAMP LED goes out.

Posted on Apr 01, 2008



  • 4234 Answers

SOURCE: SX-950 Stereo Pioneer Receiver

The relay is a protection device for the speakers. It will shut off the speakers when problems are detected internally. I would suspect that some of the capacitors in the front end are in need of replacing. This is a common item for units this old. I have restored a number of these for customers over the years with much success. Figure about $15-$20 in parts for this repair plus the local labor rate. This unit is definately worth a refurb. What happens is that there is dsome DC voltage being leaked into the final amplification stage. This triggers the protection circuit to shut off the speakers. DC voltage on a speaker will heat up the coil and eventually destroy the speaker.

Posted on Apr 02, 2008


Graeme Ross

  • 1512 Answers

SOURCE: I just bought an old

Any luck with checking antenna connections? I have a service manual if you need it. Tuner section in this old girl predates the LM7001. Uses ha1137-38 chips, bit more complex to repair.

Posted on Jun 09, 2008


  • 4 Answers

SOURCE: Pioneer SX-737

You might try to get some information from: Somebody will need it if you want it worked on. If it is real heavy (40lb.s +) it may well be from the 70's. Mostly good units. I wouldn't give you $0.10 for their new stuff.

Posted on Nov 05, 2008


  • 2 Answers

SOURCE: Pioneer SX-750 Old School Need Help

Check the speaker wire. Sometimes it can just be loose in the terminals and cause distortion. I have had the problem before.


Posted on Jan 12, 2009

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1 Answer

Why aren't parking lights working?

Park lamp fuse 20amp located in the under hood fuse box .DRL control module
Daytime Running Lamps (DRL) Control Module
Right of the steering column, behind the IP
Park, Sidemarker, Tail and License Lamps
Voltage is applied continuously to the PARK fuse to the headlamp and the instrument panel (IP) lamp dimmer switch through CKT 1340.
When the headlamp and the (IP) lamp dimmer switch is in the PARK or HEAD position, voltage is applied to CKT 9 thus activating the following lamps:
• The park lamps
• The side marker lamps
• The tail lamps
• The license lamps
The park/turn lamps are the only lamps that do not activate yet receive a current from CKT 9. The park/turn lamps do not activate because the voltage drop across the front side marker lamps is much higher than that across the turn lamp filaments Step
Normal Result(s)
Abnormal Result(s)*

Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
The following lamps light:
• The license plate lamps
• The taillight lamps
• The front side marker lamps (Domestic)
• The front parking lamps (Domestic)
The headlamp position lamps (Export)
Refer to Park Lamps Inoperative
Park Lamps Inoperative

Inspect the PARK LP fuse.
Is the fuse open?
YES - Go to Step 2
NO - Go to Step 3

Repair a short to ground in CKT 1340.
Is the repair complete?
Go to Exterior Lights System Check

Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal R and ground.
Did the test lamp light?
Go to Step 7
Go to Step 4

Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal O and ground.
Did the test lamp light?
Go to Step 5
Go to Step 6

Replace the headlamp/IP lamp dimmer switch. Refer to Headlamp Switch Replacement .
Is the repair complete?
Go to Exterior Lights System Check

Repair the following conditions in CKT 1340 between the PARK LP fuse and the headlamp and the IP lamp dimmer switch harness connector terminal O:
• A faulty connection
• An open circuit
Is the repair complete?
Go to Exterior Lights System Check

Repair the following conditions in CKT 9 between the headlamp and the IP lamp dimmer switch harness connector terminal R and S204:
• A faulty connection
• An open circuit
Is the repair complete?
Go to Exterior Lights System Check

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Does the bulb in a dlp unit get weak and dull over time?

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Only way to know if it is the problem is to replace it.

Some lamps will just before total failure go a bit dimmer and take longer at turn on to reach full brightness level.

With the model number you can GOOGLE with "lamp" to locate one for a replacement (try for an original one as they last longer than generic ones).

There are from some venders also instructions and You Tube has video instructions for replacing most types.

The lamps in 90% of sets are designed to be customer replaceable and it usually is a ten minute job.

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Most modern dimmers are solid state, and should be able to get full power to the lamps. Older dimmers aren't very efficient and work a little differently - but should still do a good job as far as brightness of the lamp. You can run into trouble trying to dim CFL (compact fluorescent lamps) if they are not labeled specifically for use with a dimmer. Even those that are labeled for use with a dimmer have a noticeably short range of dimming when compared to standard tungsten lamps, and tend to have an audible buzzing sound.

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CFL's are available in both dim-able and standard types. As you may have guessed, only those marked as "dim-able" will work with a dimmer switch. Dim-able CFLs cost slightly more than standard CFLs but may be controlled by any switch. Dimmer switches may only control incandescent and other type lamps that specifically state they are compatible with dimmer switches.

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