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VALVE REPLACEMENT AND TROUBLE SHOOTING

Laney

6

6

TECHNICAL SPECIFICATIONS

SOLUTION

 

3

Replace the secondary fuse and turn on the power.  View the output valves.  IF one valve fails to light up, replace that valve.  
If the output valves check out OK, another cause of a blown secondary fuse is a damaged preamplifier valve.  Start with valve 
V1 and replace it.  Follow the above procedure.  If the symptom persists, consult a qualified engineer, do not fit higher rated 
fuses.

SYMPTOM

 

4

No preamplifier boost

SOLUTION

 

4

Replace preamplifier tubes V1, V2 or V3 or a combination

SYMPTOM

 

5

Slow loss of power

SOLUTION

 

5

Check first for damaged output valves (glowing, flashing or dead) by using the procedures described in solution 3.

All of these trouble shooting procedures can be performed quickly, without the aid of any sophisticated test gear.  We suggest 
that you always maintain spare valves for emergency purposes.  Keep you 

Laney

 free of dirt, dust and moisture to prevent 

performance failure.  Never subject your amp to environmental conditions that would not be comfortable to you!

Should other customer service be necessary, contact your authorised 

Laney

 dealer or call 

Laney

 service direct.

Laney

Maximum power consumption: 

30

 

Watts

 Supply voltage (Factory pre-set): 

115/230

 

Volts

  Supply 

Frequency: 

50/60Hz

 Output power: 

15

 

watts

 Input impedance Hi & Lo: 

1

 

Meg

 Input sensitivity 

Hi input: 

100uV/-80dB

  Input sensitivity Lo input: 

200uV/-74dB

  Line output level (nominal): 

0dB

 

Line out impedance: 

1K

 

Ohm

 Speaker Impedance: 

8

 

Ohms

  Speaker size: 

10"/250mm

 Speaker 

rating: 

35

 

watts

 HxWxD (mm): 

355x385x250

*In the intrest of continuing product developement BLT Industries reserve the right to amend specifications without prior notice.

In the interest of continued product development BLT Industries Ltd. Reserves the right to amend product specification without prior notification.

POWER TO THE MUSIC

Laney

Summary of Contents for LC15

Page 1: ...MODEL LC15 Laney USER MANUAL LC SERIES LC15R www laney co uk...

Page 2: ...d with a damp cloth The vinyl covering used on some units can be cleaned with a damp cloth or ammonia based household cleaner if necessary Disconnect the unit from the power supply before cleaning 15...

Page 3: ...of information The front and rear panels of each unit are graphically illustrated with each control and feature numbered For a description of the function of each control feature simply check the num...

Page 4: ...4 4 10 10 0 0 1 1 3 3 2 2 9 9 8 8 7 7 1 1 3 3 2 2 9 9 8 8 7 7 6 6 5 5 4 4 10 10 0 0 1 1 3 3 2 2 9 9 8 8 7 7 6 6 5 5 4 4 10 10 0 0 1 1 3 3 2 2 6 6 5 5 4 4 10 10 0 0 9 9 8 8 7 7 6 6 5 5 4 4 10 10 0 0 1...

Page 5: ...runs very clean at levels up to 7 the gain and distortion increases smoothly When the control is set beyond 7 another stage of gain is introduced resulting in a saturated valve sound BRIGHT SWITCH Ad...

Page 6: ...ELECTRIC CAUTION CAUTION SAME TYPE AND RATING SAME TYPE AND RATING REPLACE ONLY WITH REPLACE ONLY WITH CAUTION CAUTION WARNING WARNING THIS APPARATUS THIS APPARATUS MUST BE EARTHED MUST BE EARTHED MA...

Page 7: ...be able to effect valve replacement yourself without incurring the costs of a service engineer Following are some of the most likely symptoms of valve malfunction and suggested methods of correction...

Page 8: ...uggest that you always maintain spare valves for emergency purposes Keep you Laney free of dirt dust and moisture to prevent performance failure Never subject your amp to environmental conditions that...

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